Home / 8,695.29-11,995.52-5,157.21

Finding the Fourth Proportional to 8,695.29, 11,995.52 and 5,157.21

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Solution

The fourth proportional to 8,695.29, 11,995.52 and 5,157.21 is: 7,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.29 : 11,995.52 = 5,157.21 : x
  2. Step 2: Convert to fraction form
    8,695.29/11,995.52 = 5,157.21/x
  3. Step 3: Cross multiply
    8,695.29x = 11,995.52 × 5,157.21
  4. Step 4: Simplify right side
    8,695.29x = 61,863,389.91
  5. Step 5: Solve for x
    x = 61,863,389.91/8,695.29
  6. Step 6: Final answer
    x = 7,114.59

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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.