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Finding the Fourth Proportional to 5,130.66, 7,697.19 and 1,667.91

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Solution

The fourth proportional to 5,130.66, 7,697.19 and 1,667.91 is: 2,502.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.66 : 7,697.19 = 1,667.91 : x
  2. Step 2: Convert to fraction form
    5,130.66/7,697.19 = 1,667.91/x
  3. Step 3: Cross multiply
    5,130.66x = 7,697.19 × 1,667.91
  4. Step 4: Simplify right side
    5,130.66x = 12,838,220.17
  5. Step 5: Solve for x
    x = 12,838,220.17/5,130.66
  6. Step 6: Final answer
    x = 2,502.26

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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.