Home / 2,602.60-3,587.46-2,129.80

Finding the Fourth Proportional to 2,602.60, 3,587.46 and 2,129.80

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Solution

The fourth proportional to 2,602.60, 3,587.46 and 2,129.80 is: 2,935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,602.60 : 3,587.46 = 2,129.80 : x
  2. Step 2: Convert to fraction form
    2,602.60/3,587.46 = 2,129.80/x
  3. Step 3: Cross multiply
    2,602.60x = 3,587.46 × 2,129.80
  4. Step 4: Simplify right side
    2,602.60x = 7,640,572.31
  5. Step 5: Solve for x
    x = 7,640,572.31/2,602.60
  6. Step 6: Final answer
    x = 2,935.75

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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.