Home / 7,155.80-9,875.28-4,171.16

Finding the Fourth Proportional to 7,155.80, 9,875.28 and 4,171.16

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Solution

The fourth proportional to 7,155.80, 9,875.28 and 4,171.16 is: 5,756.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.80 : 9,875.28 = 4,171.16 : x
  2. Step 2: Convert to fraction form
    7,155.80/9,875.28 = 4,171.16/x
  3. Step 3: Cross multiply
    7,155.80x = 9,875.28 × 4,171.16
  4. Step 4: Simplify right side
    7,155.80x = 41,191,372.92
  5. Step 5: Solve for x
    x = 41,191,372.92/7,155.80
  6. Step 6: Final answer
    x = 5,756.36

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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.