Home / 2,390.80-3,586.40-929.56

Finding the Fourth Proportional to 2,390.80, 3,586.40 and 929.56

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Solution

The fourth proportional to 2,390.80, 3,586.40 and 929.56 is: 1,394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.80 : 3,586.40 = 929.56 : x
  2. Step 2: Convert to fraction form
    2,390.80/3,586.40 = 929.56/x
  3. Step 3: Cross multiply
    2,390.80x = 3,586.40 × 929.56
  4. Step 4: Simplify right side
    2,390.80x = 3,333,773.98
  5. Step 5: Solve for x
    x = 3,333,773.98/2,390.80
  6. Step 6: Final answer
    x = 1,394.42

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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.