Home / 3,859.17-5,316.60-2,678.19

Finding the Fourth Proportional to 3,859.17, 5,316.60 and 2,678.19

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Solution

The fourth proportional to 3,859.17, 5,316.60 and 2,678.19 is: 3,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.17 : 5,316.60 = 2,678.19 : x
  2. Step 2: Convert to fraction form
    3,859.17/5,316.60 = 2,678.19/x
  3. Step 3: Cross multiply
    3,859.17x = 5,316.60 × 2,678.19
  4. Step 4: Simplify right side
    3,859.17x = 14,238,864.95
  5. Step 5: Solve for x
    x = 14,238,864.95/3,859.17
  6. Step 6: Final answer
    x = 3,689.62

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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.