Home / 1,718.16-2,578.23-938.13

Finding the Fourth Proportional to 1,718.16, 2,578.23 and 938.13

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Solution

The fourth proportional to 1,718.16, 2,578.23 and 938.13 is: 1,407.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.16 : 2,578.23 = 938.13 : x
  2. Step 2: Convert to fraction form
    1,718.16/2,578.23 = 938.13/x
  3. Step 3: Cross multiply
    1,718.16x = 2,578.23 × 938.13
  4. Step 4: Simplify right side
    1,718.16x = 2,418,714.91
  5. Step 5: Solve for x
    x = 2,418,714.91/1,718.16
  6. Step 6: Final answer
    x = 1,407.74

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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.