Home / 1,127.14-1,690.52-434.13

Finding the Fourth Proportional to 1,127.14, 1,690.52 and 434.13

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Solution

The fourth proportional to 1,127.14, 1,690.52 and 434.13 is: 651.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.14 : 1,690.52 = 434.13 : x
  2. Step 2: Convert to fraction form
    1,127.14/1,690.52 = 434.13/x
  3. Step 3: Cross multiply
    1,127.14x = 1,690.52 × 434.13
  4. Step 4: Simplify right side
    1,127.14x = 733,905.45
  5. Step 5: Solve for x
    x = 733,905.45/1,127.14
  6. Step 6: Final answer
    x = 651.12

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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.