Home / 2,385.15-3,290.05-1,577.60

Finding the Fourth Proportional to 2,385.15, 3,290.05 and 1,577.60

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Solution

The fourth proportional to 2,385.15, 3,290.05 and 1,577.60 is: 2,176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.15 : 3,290.05 = 1,577.60 : x
  2. Step 2: Convert to fraction form
    2,385.15/3,290.05 = 1,577.60/x
  3. Step 3: Cross multiply
    2,385.15x = 3,290.05 × 1,577.60
  4. Step 4: Simplify right side
    2,385.15x = 5,190,374.99
  5. Step 5: Solve for x
    x = 5,190,374.99/2,385.15
  6. Step 6: Final answer
    x = 2,176.13

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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.