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Finding the Fourth Proportional to 8,703.36, 12,006.40 and 5,164.06

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Solution

The fourth proportional to 8,703.36, 12,006.40 and 5,164.06 is: 7,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.36 : 12,006.40 = 5,164.06 : x
  2. Step 2: Convert to fraction form
    8,703.36/12,006.40 = 5,164.06/x
  3. Step 3: Cross multiply
    8,703.36x = 12,006.40 × 5,164.06
  4. Step 4: Simplify right side
    8,703.36x = 62,001,769.98
  5. Step 5: Solve for x
    x = 62,001,769.98/8,703.36
  6. Step 6: Final answer
    x = 7,123.89

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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.