Home / 1,490.90-2,237.69-1,245.62

Finding the Fourth Proportional to 1,490.90, 2,237.69 and 1,245.62

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Solution

The fourth proportional to 1,490.90, 2,237.69 and 1,245.62 is: 1,869.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.90 : 2,237.69 = 1,245.62 : x
  2. Step 2: Convert to fraction form
    1,490.90/2,237.69 = 1,245.62/x
  3. Step 3: Cross multiply
    1,490.90x = 2,237.69 × 1,245.62
  4. Step 4: Simplify right side
    1,490.90x = 2,787,320.13
  5. Step 5: Solve for x
    x = 2,787,320.13/1,490.90
  6. Step 6: Final answer
    x = 1,869.56

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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.