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Finding the Fourth Proportional to 8,807.11, 12,155.19 and 5,271.46

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Solution

The fourth proportional to 8,807.11, 12,155.19 and 5,271.46 is: 7,275.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.11 : 12,155.19 = 5,271.46 : x
  2. Step 2: Convert to fraction form
    8,807.11/12,155.19 = 5,271.46/x
  3. Step 3: Cross multiply
    8,807.11x = 12,155.19 × 5,271.46
  4. Step 4: Simplify right side
    8,807.11x = 64,075,597.88
  5. Step 5: Solve for x
    x = 64,075,597.88/8,807.11
  6. Step 6: Final answer
    x = 7,275.44

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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.