Home / 5,428.14-7,490.13-3,070.20

Finding the Fourth Proportional to 5,428.14, 7,490.13 and 3,070.20

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Solution

The fourth proportional to 5,428.14, 7,490.13 and 3,070.20 is: 4,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.14 : 7,490.13 = 3,070.20 : x
  2. Step 2: Convert to fraction form
    5,428.14/7,490.13 = 3,070.20/x
  3. Step 3: Cross multiply
    5,428.14x = 7,490.13 × 3,070.20
  4. Step 4: Simplify right side
    5,428.14x = 22,996,197.13
  5. Step 5: Solve for x
    x = 22,996,197.13/5,428.14
  6. Step 6: Final answer
    x = 4,236.48

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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.