Home / 1,742.29-2,611.60-918.74

Finding the Fourth Proportional to 1,742.29, 2,611.60 and 918.74

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Solution

The fourth proportional to 1,742.29, 2,611.60 and 918.74 is: 1,377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.29 : 2,611.60 = 918.74 : x
  2. Step 2: Convert to fraction form
    1,742.29/2,611.60 = 918.74/x
  3. Step 3: Cross multiply
    1,742.29x = 2,611.60 × 918.74
  4. Step 4: Simplify right side
    1,742.29x = 2,399,385.62
  5. Step 5: Solve for x
    x = 2,399,385.62/1,742.29
  6. Step 6: Final answer
    x = 1,377.15

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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.