Home / 7,320.24-10,977.80-3,159.12

Finding the Fourth Proportional to 7,320.24, 10,977.80 and 3,159.12

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Solution

The fourth proportional to 7,320.24, 10,977.80 and 3,159.12 is: 4,737.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.24 : 10,977.80 = 3,159.12 : x
  2. Step 2: Convert to fraction form
    7,320.24/10,977.80 = 3,159.12/x
  3. Step 3: Cross multiply
    7,320.24x = 10,977.80 × 3,159.12
  4. Step 4: Simplify right side
    7,320.24x = 34,680,187.54
  5. Step 5: Solve for x
    x = 34,680,187.54/7,320.24
  6. Step 6: Final answer
    x = 4,737.58

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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.