Home / 2,981.16-4,113.48-1,722.24

Finding the Fourth Proportional to 2,981.16, 4,113.48 and 1,722.24

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Solution

The fourth proportional to 2,981.16, 4,113.48 and 1,722.24 is: 2,376.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.16 : 4,113.48 = 1,722.24 : x
  2. Step 2: Convert to fraction form
    2,981.16/4,113.48 = 1,722.24/x
  3. Step 3: Cross multiply
    2,981.16x = 4,113.48 × 1,722.24
  4. Step 4: Simplify right side
    2,981.16x = 7,084,399.80
  5. Step 5: Solve for x
    x = 7,084,399.80/2,981.16
  6. Step 6: Final answer
    x = 2,376.39

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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.