Home / 2,076.24-2,865.08-1,290

Finding the Fourth Proportional to 2,076.24, 2,865.08 and 1,290

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Solution

The fourth proportional to 2,076.24, 2,865.08 and 1,290 is: 1,780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.24 : 2,865.08 = 1,290 : x
  2. Step 2: Convert to fraction form
    2,076.24/2,865.08 = 1,290/x
  3. Step 3: Cross multiply
    2,076.24x = 2,865.08 × 1,290
  4. Step 4: Simplify right side
    2,076.24x = 3,695,953.20
  5. Step 5: Solve for x
    x = 3,695,953.20/2,076.24
  6. Step 6: Final answer
    x = 1,780.12

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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.