Home / 1,127.38-1,555.75-630.02

Finding the Fourth Proportional to 1,127.38, 1,555.75 and 630.02

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Solution

The fourth proportional to 1,127.38, 1,555.75 and 630.02 is: 869.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.38 : 1,555.75 = 630.02 : x
  2. Step 2: Convert to fraction form
    1,127.38/1,555.75 = 630.02/x
  3. Step 3: Cross multiply
    1,127.38x = 1,555.75 × 630.02
  4. Step 4: Simplify right side
    1,127.38x = 980,152.30
  5. Step 5: Solve for x
    x = 980,152.30/1,127.38
  6. Step 6: Final answer
    x = 869.41

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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.