Home / 2,638.60-3,640.77-1,590.74

Finding the Fourth Proportional to 2,638.60, 3,640.77 and 1,590.74

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Solution

The fourth proportional to 2,638.60, 3,640.77 and 1,590.74 is: 2,194.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.60 : 3,640.77 = 1,590.74 : x
  2. Step 2: Convert to fraction form
    2,638.60/3,640.77 = 1,590.74/x
  3. Step 3: Cross multiply
    2,638.60x = 3,640.77 × 1,590.74
  4. Step 4: Simplify right side
    2,638.60x = 5,791,518.47
  5. Step 5: Solve for x
    x = 5,791,518.47/2,638.60
  6. Step 6: Final answer
    x = 2,194.92

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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.