Home / 8,900.04-12,281.45-4,921.12

Finding the Fourth Proportional to 8,900.04, 12,281.45 and 4,921.12

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Solution

The fourth proportional to 8,900.04, 12,281.45 and 4,921.12 is: 6,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.04 : 12,281.45 = 4,921.12 : x
  2. Step 2: Convert to fraction form
    8,900.04/12,281.45 = 4,921.12/x
  3. Step 3: Cross multiply
    8,900.04x = 12,281.45 × 4,921.12
  4. Step 4: Simplify right side
    8,900.04x = 60,438,489.22
  5. Step 5: Solve for x
    x = 60,438,489.22/8,900.04
  6. Step 6: Final answer
    x = 6,790.81

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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.