Home / 9,407.86-12,982.75-5,159.10

Finding the Fourth Proportional to 9,407.86, 12,982.75 and 5,159.10

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Solution

The fourth proportional to 9,407.86, 12,982.75 and 5,159.10 is: 7,119.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,407.86 : 12,982.75 = 5,159.10 : x
  2. Step 2: Convert to fraction form
    9,407.86/12,982.75 = 5,159.10/x
  3. Step 3: Cross multiply
    9,407.86x = 12,982.75 × 5,159.10
  4. Step 4: Simplify right side
    9,407.86x = 66,979,288.30
  5. Step 5: Solve for x
    x = 66,979,288.30/9,407.86
  6. Step 6: Final answer
    x = 7,119.50

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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.