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Finding the Fourth Proportional to 5,276.65, 7,914.98 and 2,158.12

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Solution

The fourth proportional to 5,276.65, 7,914.98 and 2,158.12 is: 3,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.65 : 7,914.98 = 2,158.12 : x
  2. Step 2: Convert to fraction form
    5,276.65/7,914.98 = 2,158.12/x
  3. Step 3: Cross multiply
    5,276.65x = 7,914.98 × 2,158.12
  4. Step 4: Simplify right side
    5,276.65x = 17,081,476.64
  5. Step 5: Solve for x
    x = 17,081,476.64/5,276.65
  6. Step 6: Final answer
    x = 3,237.18

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1.5x scale

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.