Home / 1,764.42-2,431.35-1,319.10

Finding the Fourth Proportional to 1,764.42, 2,431.35 and 1,319.10

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Solution

The fourth proportional to 1,764.42, 2,431.35 and 1,319.10 is: 1,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.42 : 2,431.35 = 1,319.10 : x
  2. Step 2: Convert to fraction form
    1,764.42/2,431.35 = 1,319.10/x
  3. Step 3: Cross multiply
    1,764.42x = 2,431.35 × 1,319.10
  4. Step 4: Simplify right side
    1,764.42x = 3,207,193.79
  5. Step 5: Solve for x
    x = 3,207,193.79/1,764.42
  6. Step 6: Final answer
    x = 1,817.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.