Home / 5,121.40-7,052.65-4,448.90

Finding the Fourth Proportional to 5,121.40, 7,052.65 and 4,448.90

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Solution

The fourth proportional to 5,121.40, 7,052.65 and 4,448.90 is: 6,126.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.40 : 7,052.65 = 4,448.90 : x
  2. Step 2: Convert to fraction form
    5,121.40/7,052.65 = 4,448.90/x
  3. Step 3: Cross multiply
    5,121.40x = 7,052.65 × 4,448.90
  4. Step 4: Simplify right side
    5,121.40x = 31,376,534.59
  5. Step 5: Solve for x
    x = 31,376,534.59/5,121.40
  6. Step 6: Final answer
    x = 6,126.55

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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.