Home / 3,490.30-5,235.78-1,298.51

Finding the Fourth Proportional to 3,490.30, 5,235.78 and 1,298.51

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Solution

The fourth proportional to 3,490.30, 5,235.78 and 1,298.51 is: 1,947.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.30 : 5,235.78 = 1,298.51 : x
  2. Step 2: Convert to fraction form
    3,490.30/5,235.78 = 1,298.51/x
  3. Step 3: Cross multiply
    3,490.30x = 5,235.78 × 1,298.51
  4. Step 4: Simplify right side
    3,490.30x = 6,798,711.01
  5. Step 5: Solve for x
    x = 6,798,711.01/3,490.30
  6. Step 6: Final answer
    x = 1,947.89

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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.