Home / 7,159.20-10,738.80-4,972.20

Finding the Fourth Proportional to 7,159.20, 10,738.80 and 4,972.20

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Solution

The fourth proportional to 7,159.20, 10,738.80 and 4,972.20 is: 7,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.20 : 10,738.80 = 4,972.20 : x
  2. Step 2: Convert to fraction form
    7,159.20/10,738.80 = 4,972.20/x
  3. Step 3: Cross multiply
    7,159.20x = 10,738.80 × 4,972.20
  4. Step 4: Simplify right side
    7,159.20x = 53,395,461.36
  5. Step 5: Solve for x
    x = 53,395,461.36/7,159.20
  6. Step 6: Final answer
    x = 7,458.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.