Home / 5,688.12-8,531.64-1,989.66

Finding the Fourth Proportional to 5,688.12, 8,531.64 and 1,989.66

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Solution

The fourth proportional to 5,688.12, 8,531.64 and 1,989.66 is: 2,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,688.12 : 8,531.64 = 1,989.66 : x
  2. Step 2: Convert to fraction form
    5,688.12/8,531.64 = 1,989.66/x
  3. Step 3: Cross multiply
    5,688.12x = 8,531.64 × 1,989.66
  4. Step 4: Simplify right side
    5,688.12x = 16,975,062.84
  5. Step 5: Solve for x
    x = 16,975,062.84/5,688.12
  6. Step 6: Final answer
    x = 2,984.30

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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.