Home / 10,187.87-15,281.07-3,167.72

Finding the Fourth Proportional to 10,187.87, 15,281.07 and 3,167.72

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Solution

The fourth proportional to 10,187.87, 15,281.07 and 3,167.72 is: 4,751.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,187.87 : 15,281.07 = 3,167.72 : x
  2. Step 2: Convert to fraction form
    10,187.87/15,281.07 = 3,167.72/x
  3. Step 3: Cross multiply
    10,187.87x = 15,281.07 × 3,167.72
  4. Step 4: Simplify right side
    10,187.87x = 48,406,151.06
  5. Step 5: Solve for x
    x = 48,406,151.06/10,187.87
  6. Step 6: Final answer
    x = 4,751.35

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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.