Home / 8,356.81-12,528.29-4,405.85

Finding the Fourth Proportional to 8,356.81, 12,528.29 and 4,405.85

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Solution

The fourth proportional to 8,356.81, 12,528.29 and 4,405.85 is: 6,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.81 : 12,528.29 = 4,405.85 : x
  2. Step 2: Convert to fraction form
    8,356.81/12,528.29 = 4,405.85/x
  3. Step 3: Cross multiply
    8,356.81x = 12,528.29 × 4,405.85
  4. Step 4: Simplify right side
    8,356.81x = 55,197,808.83
  5. Step 5: Solve for x
    x = 55,197,808.83/8,356.81
  6. Step 6: Final answer
    x = 6,605.13

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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.