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Finding the Fourth Proportional to 8,807.58, 12,147.40 and 7,743.08

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Solution

The fourth proportional to 8,807.58, 12,147.40 and 7,743.08 is: 10,679.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.58 : 12,147.40 = 7,743.08 : x
  2. Step 2: Convert to fraction form
    8,807.58/12,147.40 = 7,743.08/x
  3. Step 3: Cross multiply
    8,807.58x = 12,147.40 × 7,743.08
  4. Step 4: Simplify right side
    8,807.58x = 94,058,270.63
  5. Step 5: Solve for x
    x = 94,058,270.63/8,807.58
  6. Step 6: Final answer
    x = 10,679.24

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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.