Home / 5,347.56-7,378.68-2,989.72

Finding the Fourth Proportional to 5,347.56, 7,378.68 and 2,989.72

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Solution

The fourth proportional to 5,347.56, 7,378.68 and 2,989.72 is: 4,125.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.56 : 7,378.68 = 2,989.72 : x
  2. Step 2: Convert to fraction form
    5,347.56/7,378.68 = 2,989.72/x
  3. Step 3: Cross multiply
    5,347.56x = 7,378.68 × 2,989.72
  4. Step 4: Simplify right side
    5,347.56x = 22,060,187.17
  5. Step 5: Solve for x
    x = 22,060,187.17/5,347.56
  6. Step 6: Final answer
    x = 4,125.28

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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.