Home / 8,665.11-11,959.38-5,130.05

Finding the Fourth Proportional to 8,665.11, 11,959.38 and 5,130.05

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Solution

The fourth proportional to 8,665.11, 11,959.38 and 5,130.05 is: 7,080.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.11 : 11,959.38 = 5,130.05 : x
  2. Step 2: Convert to fraction form
    8,665.11/11,959.38 = 5,130.05/x
  3. Step 3: Cross multiply
    8,665.11x = 11,959.38 × 5,130.05
  4. Step 4: Simplify right side
    8,665.11x = 61,352,157.57
  5. Step 5: Solve for x
    x = 61,352,157.57/8,665.11
  6. Step 6: Final answer
    x = 7,080.37

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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.