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Finding the Fourth Proportional to 2,716.40, 4,070.20 and 2,457.20

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Solution

The fourth proportional to 2,716.40, 4,070.20 and 2,457.20 is: 3,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,716.40 : 4,070.20 = 2,457.20 : x
  2. Step 2: Convert to fraction form
    2,716.40/4,070.20 = 2,457.20/x
  3. Step 3: Cross multiply
    2,716.40x = 4,070.20 × 2,457.20
  4. Step 4: Simplify right side
    2,716.40x = 10,001,295.44
  5. Step 5: Solve for x
    x = 10,001,295.44/2,716.40
  6. Step 6: Final answer
    x = 3,681.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.