Home / 3,116.48-4,292.96-2,916.80

Finding the Fourth Proportional to 3,116.48, 4,292.96 and 2,916.80

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Solution

The fourth proportional to 3,116.48, 4,292.96 and 2,916.80 is: 4,017.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.48 : 4,292.96 = 2,916.80 : x
  2. Step 2: Convert to fraction form
    3,116.48/4,292.96 = 2,916.80/x
  3. Step 3: Cross multiply
    3,116.48x = 4,292.96 × 2,916.80
  4. Step 4: Simplify right side
    3,116.48x = 12,521,705.73
  5. Step 5: Solve for x
    x = 12,521,705.73/3,116.48
  6. Step 6: Final answer
    x = 4,017.90

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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.