Home / 8,290.70-12,436.04-5,685.74

Finding the Fourth Proportional to 8,290.70, 12,436.04 and 5,685.74

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Solution

The fourth proportional to 8,290.70, 12,436.04 and 5,685.74 is: 8,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.70 : 12,436.04 = 5,685.74 : x
  2. Step 2: Convert to fraction form
    8,290.70/12,436.04 = 5,685.74/x
  3. Step 3: Cross multiply
    8,290.70x = 12,436.04 × 5,685.74
  4. Step 4: Simplify right side
    8,290.70x = 70,708,090.07
  5. Step 5: Solve for x
    x = 70,708,090.07/8,290.70
  6. Step 6: Final answer
    x = 8,528.60

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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.