Home / 1,359.15-2,038.76-434.76

Finding the Fourth Proportional to 1,359.15, 2,038.76 and 434.76

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Solution

The fourth proportional to 1,359.15, 2,038.76 and 434.76 is: 652.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.15 : 2,038.76 = 434.76 : x
  2. Step 2: Convert to fraction form
    1,359.15/2,038.76 = 434.76/x
  3. Step 3: Cross multiply
    1,359.15x = 2,038.76 × 434.76
  4. Step 4: Simplify right side
    1,359.15x = 886,371.30
  5. Step 5: Solve for x
    x = 886,371.30/1,359.15
  6. Step 6: Final answer
    x = 652.15

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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.