Home / 3,116.61-4,300.33-1,857.78

Finding the Fourth Proportional to 3,116.61, 4,300.33 and 1,857.78

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Solution

The fourth proportional to 3,116.61, 4,300.33 and 1,857.78 is: 2,563.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.61 : 4,300.33 = 1,857.78 : x
  2. Step 2: Convert to fraction form
    3,116.61/4,300.33 = 1,857.78/x
  3. Step 3: Cross multiply
    3,116.61x = 4,300.33 × 1,857.78
  4. Step 4: Simplify right side
    3,116.61x = 7,989,070.68
  5. Step 5: Solve for x
    x = 7,989,070.68/3,116.61
  6. Step 6: Final answer
    x = 2,563.39

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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.