Home / 1,132.30-1,563.12-712.85

Finding the Fourth Proportional to 1,132.30, 1,563.12 and 712.85

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Solution

The fourth proportional to 1,132.30, 1,563.12 and 712.85 is: 984.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.30 : 1,563.12 = 712.85 : x
  2. Step 2: Convert to fraction form
    1,132.30/1,563.12 = 712.85/x
  3. Step 3: Cross multiply
    1,132.30x = 1,563.12 × 712.85
  4. Step 4: Simplify right side
    1,132.30x = 1,114,266.53
  5. Step 5: Solve for x
    x = 1,114,266.53/1,132.30
  6. Step 6: Final answer
    x = 984.08

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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.