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Finding the Fourth Proportional to 8,994.40, 12,407.28 and 5,267.68

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Solution

The fourth proportional to 8,994.40, 12,407.28 and 5,267.68 is: 7,266.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,994.40 : 12,407.28 = 5,267.68 : x
  2. Step 2: Convert to fraction form
    8,994.40/12,407.28 = 5,267.68/x
  3. Step 3: Cross multiply
    8,994.40x = 12,407.28 × 5,267.68
  4. Step 4: Simplify right side
    8,994.40x = 65,357,580.71
  5. Step 5: Solve for x
    x = 65,357,580.71/8,994.40
  6. Step 6: Final answer
    x = 7,266.47

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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.