Home / 7,905.55-10,909.74-4,320.61

Finding the Fourth Proportional to 7,905.55, 10,909.74 and 4,320.61

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Solution

The fourth proportional to 7,905.55, 10,909.74 and 4,320.61 is: 5,962.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.55 : 10,909.74 = 4,320.61 : x
  2. Step 2: Convert to fraction form
    7,905.55/10,909.74 = 4,320.61/x
  3. Step 3: Cross multiply
    7,905.55x = 10,909.74 × 4,320.61
  4. Step 4: Simplify right side
    7,905.55x = 47,136,731.74
  5. Step 5: Solve for x
    x = 47,136,731.74/7,905.55
  6. Step 6: Final answer
    x = 5,962.49

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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.