Home / 6,642.16-9,165.60-3,657.76

Finding the Fourth Proportional to 6,642.16, 9,165.60 and 3,657.76

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Solution

The fourth proportional to 6,642.16, 9,165.60 and 3,657.76 is: 5,047.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.16 : 9,165.60 = 3,657.76 : x
  2. Step 2: Convert to fraction form
    6,642.16/9,165.60 = 3,657.76/x
  3. Step 3: Cross multiply
    6,642.16x = 9,165.60 × 3,657.76
  4. Step 4: Simplify right side
    6,642.16x = 33,525,565.06
  5. Step 5: Solve for x
    x = 33,525,565.06/6,642.16
  6. Step 6: Final answer
    x = 5,047.39

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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.