Home / 8,921.68-12,306.21-5,733.89

Finding the Fourth Proportional to 8,921.68, 12,306.21 and 5,733.89

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Solution

The fourth proportional to 8,921.68, 12,306.21 and 5,733.89 is: 7,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.68 : 12,306.21 = 5,733.89 : x
  2. Step 2: Convert to fraction form
    8,921.68/12,306.21 = 5,733.89/x
  3. Step 3: Cross multiply
    8,921.68x = 12,306.21 × 5,733.89
  4. Step 4: Simplify right side
    8,921.68x = 70,562,417.57
  5. Step 5: Solve for x
    x = 70,562,417.57/8,921.68
  6. Step 6: Final answer
    x = 7,909.10

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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.