Home / 2,125.57-3,187.77-1,507.45

Finding the Fourth Proportional to 2,125.57, 3,187.77 and 1,507.45

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Solution

The fourth proportional to 2,125.57, 3,187.77 and 1,507.45 is: 2,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.57 : 3,187.77 = 1,507.45 : x
  2. Step 2: Convert to fraction form
    2,125.57/3,187.77 = 1,507.45/x
  3. Step 3: Cross multiply
    2,125.57x = 3,187.77 × 1,507.45
  4. Step 4: Simplify right side
    2,125.57x = 4,805,403.89
  5. Step 5: Solve for x
    x = 4,805,403.89/2,125.57
  6. Step 6: Final answer
    x = 2,260.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.