Home / 2,981.60-4,114.38-1,722.08

Finding the Fourth Proportional to 2,981.60, 4,114.38 and 1,722.08

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Solution

The fourth proportional to 2,981.60, 4,114.38 and 1,722.08 is: 2,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.60 : 4,114.38 = 1,722.08 : x
  2. Step 2: Convert to fraction form
    2,981.60/4,114.38 = 1,722.08/x
  3. Step 3: Cross multiply
    2,981.60x = 4,114.38 × 1,722.08
  4. Step 4: Simplify right side
    2,981.60x = 7,085,291.51
  5. Step 5: Solve for x
    x = 7,085,291.51/2,981.60
  6. Step 6: Final answer
    x = 2,376.34

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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.