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Finding the Fourth Proportional to 5,356.88, 7,386.90 and 5,236.16

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Solution

The fourth proportional to 5,356.88, 7,386.90 and 5,236.16 is: 7,220.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.88 : 7,386.90 = 5,236.16 : x
  2. Step 2: Convert to fraction form
    5,356.88/7,386.90 = 5,236.16/x
  3. Step 3: Cross multiply
    5,356.88x = 7,386.90 × 5,236.16
  4. Step 4: Simplify right side
    5,356.88x = 38,678,990.30
  5. Step 5: Solve for x
    x = 38,678,990.30/5,356.88
  6. Step 6: Final answer
    x = 7,220.43

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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.