Home / 8,405.47-12,607.75-2,561.63

Finding the Fourth Proportional to 8,405.47, 12,607.75 and 2,561.63

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Solution

The fourth proportional to 8,405.47, 12,607.75 and 2,561.63 is: 3,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.47 : 12,607.75 = 2,561.63 : x
  2. Step 2: Convert to fraction form
    8,405.47/12,607.75 = 2,561.63/x
  3. Step 3: Cross multiply
    8,405.47x = 12,607.75 × 2,561.63
  4. Step 4: Simplify right side
    8,405.47x = 32,296,330.80
  5. Step 5: Solve for x
    x = 32,296,330.80/8,405.47
  6. Step 6: Final answer
    x = 3,842.30

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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.