Home / 8,985.80-13,478.70-3,141.65

Finding the Fourth Proportional to 8,985.80, 13,478.70 and 3,141.65

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Solution

The fourth proportional to 8,985.80, 13,478.70 and 3,141.65 is: 4,712.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.80 : 13,478.70 = 3,141.65 : x
  2. Step 2: Convert to fraction form
    8,985.80/13,478.70 = 3,141.65/x
  3. Step 3: Cross multiply
    8,985.80x = 13,478.70 × 3,141.65
  4. Step 4: Simplify right side
    8,985.80x = 42,345,357.86
  5. Step 5: Solve for x
    x = 42,345,357.86/8,985.80
  6. Step 6: Final answer
    x = 4,712.48

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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.