Home / 8,685.60-11,987.37-4,909.92

Finding the Fourth Proportional to 8,685.60, 11,987.37 and 4,909.92

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Solution

The fourth proportional to 8,685.60, 11,987.37 and 4,909.92 is: 6,776.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.60 : 11,987.37 = 4,909.92 : x
  2. Step 2: Convert to fraction form
    8,685.60/11,987.37 = 4,909.92/x
  3. Step 3: Cross multiply
    8,685.60x = 11,987.37 × 4,909.92
  4. Step 4: Simplify right side
    8,685.60x = 58,857,027.71
  5. Step 5: Solve for x
    x = 58,857,027.71/8,685.60
  6. Step 6: Final answer
    x = 6,776.39

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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.