Home / 5,085.95-7,018.87-2,847.69

Finding the Fourth Proportional to 5,085.95, 7,018.87 and 2,847.69

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Solution

The fourth proportional to 5,085.95, 7,018.87 and 2,847.69 is: 3,929.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.95 : 7,018.87 = 2,847.69 : x
  2. Step 2: Convert to fraction form
    5,085.95/7,018.87 = 2,847.69/x
  3. Step 3: Cross multiply
    5,085.95x = 7,018.87 × 2,847.69
  4. Step 4: Simplify right side
    5,085.95x = 19,987,565.91
  5. Step 5: Solve for x
    x = 19,987,565.91/5,085.95
  6. Step 6: Final answer
    x = 3,929.96

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Half scale
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Double scale
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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.