Home / 8,780.40-12,117.12-4,801.68

Finding the Fourth Proportional to 8,780.40, 12,117.12 and 4,801.68

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Solution

The fourth proportional to 8,780.40, 12,117.12 and 4,801.68 is: 6,626.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.40 : 12,117.12 = 4,801.68 : x
  2. Step 2: Convert to fraction form
    8,780.40/12,117.12 = 4,801.68/x
  3. Step 3: Cross multiply
    8,780.40x = 12,117.12 × 4,801.68
  4. Step 4: Simplify right side
    8,780.40x = 58,182,532.76
  5. Step 5: Solve for x
    x = 58,182,532.76/8,780.40
  6. Step 6: Final answer
    x = 6,626.41

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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.