Home / 8,640.76-11,925.40-4,864.67

Finding the Fourth Proportional to 8,640.76, 11,925.40 and 4,864.67

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Solution

The fourth proportional to 8,640.76, 11,925.40 and 4,864.67 is: 6,713.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.76 : 11,925.40 = 4,864.67 : x
  2. Step 2: Convert to fraction form
    8,640.76/11,925.40 = 4,864.67/x
  3. Step 3: Cross multiply
    8,640.76x = 11,925.40 × 4,864.67
  4. Step 4: Simplify right side
    8,640.76x = 58,013,135.62
  5. Step 5: Solve for x
    x = 58,013,135.62/8,640.76
  6. Step 6: Final answer
    x = 6,713.89

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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.