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Finding the Fourth Proportional to 8,848.40, 12,228.36 and 7,077.20

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Solution

The fourth proportional to 8,848.40, 12,228.36 and 7,077.20 is: 9,780.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,848.40 : 12,228.36 = 7,077.20 : x
  2. Step 2: Convert to fraction form
    8,848.40/12,228.36 = 7,077.20/x
  3. Step 3: Cross multiply
    8,848.40x = 12,228.36 × 7,077.20
  4. Step 4: Simplify right side
    8,848.40x = 86,542,549.39
  5. Step 5: Solve for x
    x = 86,542,549.39/8,848.40
  6. Step 6: Final answer
    x = 9,780.59

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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.