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Finding the Fourth Proportional to 2,720.66, 3,747.50 and 2,130.14

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Solution

The fourth proportional to 2,720.66, 3,747.50 and 2,130.14 is: 2,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.66 : 3,747.50 = 2,130.14 : x
  2. Step 2: Convert to fraction form
    2,720.66/3,747.50 = 2,130.14/x
  3. Step 3: Cross multiply
    2,720.66x = 3,747.50 × 2,130.14
  4. Step 4: Simplify right side
    2,720.66x = 7,982,699.65
  5. Step 5: Solve for x
    x = 7,982,699.65/2,720.66
  6. Step 6: Final answer
    x = 2,934.10

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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.