Home / 1,531.50-2,297.34-1,123.20

Finding the Fourth Proportional to 1,531.50, 2,297.34 and 1,123.20

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Solution

The fourth proportional to 1,531.50, 2,297.34 and 1,123.20 is: 1,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.50 : 2,297.34 = 1,123.20 : x
  2. Step 2: Convert to fraction form
    1,531.50/2,297.34 = 1,123.20/x
  3. Step 3: Cross multiply
    1,531.50x = 2,297.34 × 1,123.20
  4. Step 4: Simplify right side
    1,531.50x = 2,580,372.29
  5. Step 5: Solve for x
    x = 2,580,372.29/1,531.50
  6. Step 6: Final answer
    x = 1,684.87

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Half scale
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Double scale
Find fourth proportional to 1,532.50, 2,298.84 and 1,124.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.