Home / 2,580.24-3,870.36-936.76

Finding the Fourth Proportional to 2,580.24, 3,870.36 and 936.76

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Solution

The fourth proportional to 2,580.24, 3,870.36 and 936.76 is: 1,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.24 : 3,870.36 = 936.76 : x
  2. Step 2: Convert to fraction form
    2,580.24/3,870.36 = 936.76/x
  3. Step 3: Cross multiply
    2,580.24x = 3,870.36 × 936.76
  4. Step 4: Simplify right side
    2,580.24x = 3,625,598.43
  5. Step 5: Solve for x
    x = 3,625,598.43/2,580.24
  6. Step 6: Final answer
    x = 1,405.14

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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.