Home / 8,915.54-12,298.05-5,727.76

Finding the Fourth Proportional to 8,915.54, 12,298.05 and 5,727.76

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Solution

The fourth proportional to 8,915.54, 12,298.05 and 5,727.76 is: 7,900.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.54 : 12,298.05 = 5,727.76 : x
  2. Step 2: Convert to fraction form
    8,915.54/12,298.05 = 5,727.76/x
  3. Step 3: Cross multiply
    8,915.54x = 12,298.05 × 5,727.76
  4. Step 4: Simplify right side
    8,915.54x = 70,440,248.12
  5. Step 5: Solve for x
    x = 70,440,248.12/8,915.54
  6. Step 6: Final answer
    x = 7,900.84

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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.