Home / 8,705.36-12,004.30-5,167.89

Finding the Fourth Proportional to 8,705.36, 12,004.30 and 5,167.89

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Solution

The fourth proportional to 8,705.36, 12,004.30 and 5,167.89 is: 7,126.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.36 : 12,004.30 = 5,167.89 : x
  2. Step 2: Convert to fraction form
    8,705.36/12,004.30 = 5,167.89/x
  3. Step 3: Cross multiply
    8,705.36x = 12,004.30 × 5,167.89
  4. Step 4: Simplify right side
    8,705.36x = 62,036,901.93
  5. Step 5: Solve for x
    x = 62,036,901.93/8,705.36
  6. Step 6: Final answer
    x = 7,126.29

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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.