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Finding the Fourth Proportional to 3,557.18, 4,909.18 and 1,964.13

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Solution

The fourth proportional to 3,557.18, 4,909.18 and 1,964.13 is: 2,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.18 : 4,909.18 = 1,964.13 : x
  2. Step 2: Convert to fraction form
    3,557.18/4,909.18 = 1,964.13/x
  3. Step 3: Cross multiply
    3,557.18x = 4,909.18 × 1,964.13
  4. Step 4: Simplify right side
    3,557.18x = 9,642,275.69
  5. Step 5: Solve for x
    x = 9,642,275.69/3,557.18
  6. Step 6: Final answer
    x = 2,710.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.