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Finding the Fourth Proportional to 8,909.63, 13,298.63 and 7,859.04

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Solution

The fourth proportional to 8,909.63, 13,298.63 and 7,859.04 is: 11,730.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.63 : 13,298.63 = 7,859.04 : x
  2. Step 2: Convert to fraction form
    8,909.63/13,298.63 = 7,859.04/x
  3. Step 3: Cross multiply
    8,909.63x = 13,298.63 × 7,859.04
  4. Step 4: Simplify right side
    8,909.63x = 104,514,465.12
  5. Step 5: Solve for x
    x = 104,514,465.12/8,909.63
  6. Step 6: Final answer
    x = 11,730.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.