Home / 7,428.15-10,255.05-4,909.46

Finding the Fourth Proportional to 7,428.15, 10,255.05 and 4,909.46

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Solution

The fourth proportional to 7,428.15, 10,255.05 and 4,909.46 is: 6,777.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.15 : 10,255.05 = 4,909.46 : x
  2. Step 2: Convert to fraction form
    7,428.15/10,255.05 = 4,909.46/x
  3. Step 3: Cross multiply
    7,428.15x = 10,255.05 × 4,909.46
  4. Step 4: Simplify right side
    7,428.15x = 50,346,706.50
  5. Step 5: Solve for x
    x = 50,346,706.50/7,428.15
  6. Step 6: Final answer
    x = 6,777.83

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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.