Home / 5,415.39-7,470.81-4,750.20

Finding the Fourth Proportional to 5,415.39, 7,470.81 and 4,750.20

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Solution

The fourth proportional to 5,415.39, 7,470.81 and 4,750.20 is: 6,553.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.39 : 7,470.81 = 4,750.20 : x
  2. Step 2: Convert to fraction form
    5,415.39/7,470.81 = 4,750.20/x
  3. Step 3: Cross multiply
    5,415.39x = 7,470.81 × 4,750.20
  4. Step 4: Simplify right side
    5,415.39x = 35,487,841.66
  5. Step 5: Solve for x
    x = 35,487,841.66/5,415.39
  6. Step 6: Final answer
    x = 6,553.15

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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.