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Finding the Fourth Proportional to 2,713.65, 4,070.61 and 766.01

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Solution

The fourth proportional to 2,713.65, 4,070.61 and 766.01 is: 1,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,713.65 : 4,070.61 = 766.01 : x
  2. Step 2: Convert to fraction form
    2,713.65/4,070.61 = 766.01/x
  3. Step 3: Cross multiply
    2,713.65x = 4,070.61 × 766.01
  4. Step 4: Simplify right side
    2,713.65x = 3,118,107.61
  5. Step 5: Solve for x
    x = 3,118,107.61/2,713.65
  6. Step 6: Final answer
    x = 1,149.05

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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.