Home / 2,864.78-4,298.73-1,325.78

Finding the Fourth Proportional to 2,864.78, 4,298.73 and 1,325.78

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Solution

The fourth proportional to 2,864.78, 4,298.73 and 1,325.78 is: 1,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.78 : 4,298.73 = 1,325.78 : x
  2. Step 2: Convert to fraction form
    2,864.78/4,298.73 = 1,325.78/x
  3. Step 3: Cross multiply
    2,864.78x = 4,298.73 × 1,325.78
  4. Step 4: Simplify right side
    2,864.78x = 5,699,170.26
  5. Step 5: Solve for x
    x = 5,699,170.26/2,864.78
  6. Step 6: Final answer
    x = 1,989.39

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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.