Home / 3,947.19-5,445.86-2,621.16

Finding the Fourth Proportional to 3,947.19, 5,445.86 and 2,621.16

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Solution

The fourth proportional to 3,947.19, 5,445.86 and 2,621.16 is: 3,616.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.19 : 5,445.86 = 2,621.16 : x
  2. Step 2: Convert to fraction form
    3,947.19/5,445.86 = 2,621.16/x
  3. Step 3: Cross multiply
    3,947.19x = 5,445.86 × 2,621.16
  4. Step 4: Simplify right side
    3,947.19x = 14,274,457.29
  5. Step 5: Solve for x
    x = 14,274,457.29/3,947.19
  6. Step 6: Final answer
    x = 3,616.36

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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.