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Finding the Fourth Proportional to 8,551.68, 12,810.48 and 5,621.10

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Solution

The fourth proportional to 8,551.68, 12,810.48 and 5,621.10 is: 8,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.68 : 12,810.48 = 5,621.10 : x
  2. Step 2: Convert to fraction form
    8,551.68/12,810.48 = 5,621.10/x
  3. Step 3: Cross multiply
    8,551.68x = 12,810.48 × 5,621.10
  4. Step 4: Simplify right side
    8,551.68x = 72,008,989.13
  5. Step 5: Solve for x
    x = 72,008,989.13/8,551.68
  6. Step 6: Final answer
    x = 8,420.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.