Home / 1,127.60-1,556.10-630.23

Finding the Fourth Proportional to 1,127.60, 1,556.10 and 630.23

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Solution

The fourth proportional to 1,127.60, 1,556.10 and 630.23 is: 869.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.60 : 1,556.10 = 630.23 : x
  2. Step 2: Convert to fraction form
    1,127.60/1,556.10 = 630.23/x
  3. Step 3: Cross multiply
    1,127.60x = 1,556.10 × 630.23
  4. Step 4: Simplify right side
    1,127.60x = 980,700.90
  5. Step 5: Solve for x
    x = 980,700.90/1,127.60
  6. Step 6: Final answer
    x = 869.72

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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.