Home / 7,155.45-9,871.20-4,169.52

Finding the Fourth Proportional to 7,155.45, 9,871.20 and 4,169.52

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Solution

The fourth proportional to 7,155.45, 9,871.20 and 4,169.52 is: 5,752.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.45 : 9,871.20 = 4,169.52 : x
  2. Step 2: Convert to fraction form
    7,155.45/9,871.20 = 4,169.52/x
  3. Step 3: Cross multiply
    7,155.45x = 9,871.20 × 4,169.52
  4. Step 4: Simplify right side
    7,155.45x = 41,158,165.82
  5. Step 5: Solve for x
    x = 41,158,165.82/7,155.45
  6. Step 6: Final answer
    x = 5,752.00

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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.