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Finding the Fourth Proportional to 8,703.74, 12,007.14 and 5,117.51

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Solution

The fourth proportional to 8,703.74, 12,007.14 and 5,117.51 is: 7,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.74 : 12,007.14 = 5,117.51 : x
  2. Step 2: Convert to fraction form
    8,703.74/12,007.14 = 5,117.51/x
  3. Step 3: Cross multiply
    8,703.74x = 12,007.14 × 5,117.51
  4. Step 4: Simplify right side
    8,703.74x = 61,446,659.02
  5. Step 5: Solve for x
    x = 61,446,659.02/8,703.74
  6. Step 6: Final answer
    x = 7,059.80

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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.