Home / 1,037.19-1,555.38-387.57

Finding the Fourth Proportional to 1,037.19, 1,555.38 and 387.57

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Solution

The fourth proportional to 1,037.19, 1,555.38 and 387.57 is: 581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.19 : 1,555.38 = 387.57 : x
  2. Step 2: Convert to fraction form
    1,037.19/1,555.38 = 387.57/x
  3. Step 3: Cross multiply
    1,037.19x = 1,555.38 × 387.57
  4. Step 4: Simplify right side
    1,037.19x = 602,818.63
  5. Step 5: Solve for x
    x = 602,818.63/1,037.19
  6. Step 6: Final answer
    x = 581.20

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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.