Home / 2,580.50-3,870.75-1,426.25

Finding the Fourth Proportional to 2,580.50, 3,870.75 and 1,426.25

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Solution

The fourth proportional to 2,580.50, 3,870.75 and 1,426.25 is: 2,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.50 : 3,870.75 = 1,426.25 : x
  2. Step 2: Convert to fraction form
    2,580.50/3,870.75 = 1,426.25/x
  3. Step 3: Cross multiply
    2,580.50x = 3,870.75 × 1,426.25
  4. Step 4: Simplify right side
    2,580.50x = 5,520,657.19
  5. Step 5: Solve for x
    x = 5,520,657.19/2,580.50
  6. Step 6: Final answer
    x = 2,139.38

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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.