Home / 9,085.28-12,540.08-5,361.76

Finding the Fourth Proportional to 9,085.28, 12,540.08 and 5,361.76

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Solution

The fourth proportional to 9,085.28, 12,540.08 and 5,361.76 is: 7,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,085.28 : 12,540.08 = 5,361.76 : x
  2. Step 2: Convert to fraction form
    9,085.28/12,540.08 = 5,361.76/x
  3. Step 3: Cross multiply
    9,085.28x = 12,540.08 × 5,361.76
  4. Step 4: Simplify right side
    9,085.28x = 67,236,899.34
  5. Step 5: Solve for x
    x = 67,236,899.34/9,085.28
  6. Step 6: Final answer
    x = 7,400.64

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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.