Home / 5,347.40-7,378.92-2,989.46

Finding the Fourth Proportional to 5,347.40, 7,378.92 and 2,989.46

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Solution

The fourth proportional to 5,347.40, 7,378.92 and 2,989.46 is: 4,125.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.40 : 7,378.92 = 2,989.46 : x
  2. Step 2: Convert to fraction form
    5,347.40/7,378.92 = 2,989.46/x
  3. Step 3: Cross multiply
    5,347.40x = 7,378.92 × 2,989.46
  4. Step 4: Simplify right side
    5,347.40x = 22,058,986.18
  5. Step 5: Solve for x
    x = 22,058,986.18/5,347.40
  6. Step 6: Final answer
    x = 4,125.18

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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.