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Finding the Fourth Proportional to 8,919.16, 13,378.80 and 6,973

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Solution

The fourth proportional to 8,919.16, 13,378.80 and 6,973 is: 10,459.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.16 : 13,378.80 = 6,973 : x
  2. Step 2: Convert to fraction form
    8,919.16/13,378.80 = 6,973/x
  3. Step 3: Cross multiply
    8,919.16x = 13,378.80 × 6,973
  4. Step 4: Simplify right side
    8,919.16x = 93,290,372.40
  5. Step 5: Solve for x
    x = 93,290,372.40/8,919.16
  6. Step 6: Final answer
    x = 10,459.55

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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.