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Finding the Fourth Proportional to 2,667.18, 4,000.29 and 718.92

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Solution

The fourth proportional to 2,667.18, 4,000.29 and 718.92 is: 1,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.18 : 4,000.29 = 718.92 : x
  2. Step 2: Convert to fraction form
    2,667.18/4,000.29 = 718.92/x
  3. Step 3: Cross multiply
    2,667.18x = 4,000.29 × 718.92
  4. Step 4: Simplify right side
    2,667.18x = 2,875,888.49
  5. Step 5: Solve for x
    x = 2,875,888.49/2,667.18
  6. Step 6: Final answer
    x = 1,078.25

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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.