Home / 3,916.80-5,405.76-2,345.13

Finding the Fourth Proportional to 3,916.80, 5,405.76 and 2,345.13

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Solution

The fourth proportional to 3,916.80, 5,405.76 and 2,345.13 is: 3,236.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.80 : 5,405.76 = 2,345.13 : x
  2. Step 2: Convert to fraction form
    3,916.80/5,405.76 = 2,345.13/x
  3. Step 3: Cross multiply
    3,916.80x = 5,405.76 × 2,345.13
  4. Step 4: Simplify right side
    3,916.80x = 12,677,209.95
  5. Step 5: Solve for x
    x = 12,677,209.95/3,916.80
  6. Step 6: Final answer
    x = 3,236.62

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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.