Home / 3,160.79-4,360.52-1,981.63

Finding the Fourth Proportional to 3,160.79, 4,360.52 and 1,981.63

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Solution

The fourth proportional to 3,160.79, 4,360.52 and 1,981.63 is: 2,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.79 : 4,360.52 = 1,981.63 : x
  2. Step 2: Convert to fraction form
    3,160.79/4,360.52 = 1,981.63/x
  3. Step 3: Cross multiply
    3,160.79x = 4,360.52 × 1,981.63
  4. Step 4: Simplify right side
    3,160.79x = 8,640,931.30
  5. Step 5: Solve for x
    x = 8,640,931.30/3,160.79
  6. Step 6: Final answer
    x = 2,733.79

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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.