Home / 5,378.50-8,065.81-1,867.55

Finding the Fourth Proportional to 5,378.50, 8,065.81 and 1,867.55

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Solution

The fourth proportional to 5,378.50, 8,065.81 and 1,867.55 is: 2,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.50 : 8,065.81 = 1,867.55 : x
  2. Step 2: Convert to fraction form
    5,378.50/8,065.81 = 1,867.55/x
  3. Step 3: Cross multiply
    5,378.50x = 8,065.81 × 1,867.55
  4. Step 4: Simplify right side
    5,378.50x = 15,063,303.47
  5. Step 5: Solve for x
    x = 15,063,303.47/5,378.50
  6. Step 6: Final answer
    x = 2,800.65

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Double scale
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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.