Home / 5,639.70-8,459.55-2,561.70

Finding the Fourth Proportional to 5,639.70, 8,459.55 and 2,561.70

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Solution

The fourth proportional to 5,639.70, 8,459.55 and 2,561.70 is: 3,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.70 : 8,459.55 = 2,561.70 : x
  2. Step 2: Convert to fraction form
    5,639.70/8,459.55 = 2,561.70/x
  3. Step 3: Cross multiply
    5,639.70x = 8,459.55 × 2,561.70
  4. Step 4: Simplify right side
    5,639.70x = 21,670,829.24
  5. Step 5: Solve for x
    x = 21,670,829.24/5,639.70
  6. Step 6: Final answer
    x = 3,842.55

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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.