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Finding the Fourth Proportional to 6,995.40, 9,655.56 and 4,126.65

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Solution

The fourth proportional to 6,995.40, 9,655.56 and 4,126.65 is: 5,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,995.40 : 9,655.56 = 4,126.65 : x
  2. Step 2: Convert to fraction form
    6,995.40/9,655.56 = 4,126.65/x
  3. Step 3: Cross multiply
    6,995.40x = 9,655.56 × 4,126.65
  4. Step 4: Simplify right side
    6,995.40x = 39,845,116.67
  5. Step 5: Solve for x
    x = 39,845,116.67/6,995.40
  6. Step 6: Final answer
    x = 5,695.90

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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.