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Finding the Fourth Proportional to 8,860.34, 13,290.52 and 8,319.05

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Solution

The fourth proportional to 8,860.34, 13,290.52 and 8,319.05 is: 12,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.34 : 13,290.52 = 8,319.05 : x
  2. Step 2: Convert to fraction form
    8,860.34/13,290.52 = 8,319.05/x
  3. Step 3: Cross multiply
    8,860.34x = 13,290.52 × 8,319.05
  4. Step 4: Simplify right side
    8,860.34x = 110,564,512.83
  5. Step 5: Solve for x
    x = 110,564,512.83/8,860.34
  6. Step 6: Final answer
    x = 12,478.59

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1.5x scale

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.