Home / 2,580.90-3,561.70-1,402.02

Finding the Fourth Proportional to 2,580.90, 3,561.70 and 1,402.02

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Solution

The fourth proportional to 2,580.90, 3,561.70 and 1,402.02 is: 1,934.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.90 : 3,561.70 = 1,402.02 : x
  2. Step 2: Convert to fraction form
    2,580.90/3,561.70 = 1,402.02/x
  3. Step 3: Cross multiply
    2,580.90x = 3,561.70 × 1,402.02
  4. Step 4: Simplify right side
    2,580.90x = 4,993,574.63
  5. Step 5: Solve for x
    x = 4,993,574.63/2,580.90
  6. Step 6: Final answer
    x = 1,934.82

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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.