Home / 7,856.73-10,842.12-4,319.87

Finding the Fourth Proportional to 7,856.73, 10,842.12 and 4,319.87

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Solution

The fourth proportional to 7,856.73, 10,842.12 and 4,319.87 is: 5,961.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.73 : 10,842.12 = 4,319.87 : x
  2. Step 2: Convert to fraction form
    7,856.73/10,842.12 = 4,319.87/x
  3. Step 3: Cross multiply
    7,856.73x = 10,842.12 × 4,319.87
  4. Step 4: Simplify right side
    7,856.73x = 46,836,494.71
  5. Step 5: Solve for x
    x = 46,836,494.71/7,856.73
  6. Step 6: Final answer
    x = 5,961.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.