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Finding the Fourth Proportional to 9,112, 12,574.56 and 6,630.08

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Solution

The fourth proportional to 9,112, 12,574.56 and 6,630.08 is: 9,149.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112 : 12,574.56 = 6,630.08 : x
  2. Step 2: Convert to fraction form
    9,112/12,574.56 = 6,630.08/x
  3. Step 3: Cross multiply
    9,112x = 12,574.56 × 6,630.08
  4. Step 4: Simplify right side
    9,112x = 83,370,338.76
  5. Step 5: Solve for x
    x = 83,370,338.76/9,112
  6. Step 6: Final answer
    x = 9,149.51

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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.