Home / 7,905.20-10,909.56-4,368.80

Finding the Fourth Proportional to 7,905.20, 10,909.56 and 4,368.80

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Solution

The fourth proportional to 7,905.20, 10,909.56 and 4,368.80 is: 6,029.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.20 : 10,909.56 = 4,368.80 : x
  2. Step 2: Convert to fraction form
    7,905.20/10,909.56 = 4,368.80/x
  3. Step 3: Cross multiply
    7,905.20x = 10,909.56 × 4,368.80
  4. Step 4: Simplify right side
    7,905.20x = 47,661,685.73
  5. Step 5: Solve for x
    x = 47,661,685.73/7,905.20
  6. Step 6: Final answer
    x = 6,029.16

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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.