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Finding the Fourth Proportional to 2,173.80, 3,260.76 and 875.16

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Solution

The fourth proportional to 2,173.80, 3,260.76 and 875.16 is: 1,312.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.80 : 3,260.76 = 875.16 : x
  2. Step 2: Convert to fraction form
    2,173.80/3,260.76 = 875.16/x
  3. Step 3: Cross multiply
    2,173.80x = 3,260.76 × 875.16
  4. Step 4: Simplify right side
    2,173.80x = 2,853,686.72
  5. Step 5: Solve for x
    x = 2,853,686.72/2,173.80
  6. Step 6: Final answer
    x = 1,312.76

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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.