Home / 1,490.87-2,226.26-1,217.49

Finding the Fourth Proportional to 1,490.87, 2,226.26 and 1,217.49

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Solution

The fourth proportional to 1,490.87, 2,226.26 and 1,217.49 is: 1,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.87 : 2,226.26 = 1,217.49 : x
  2. Step 2: Convert to fraction form
    1,490.87/2,226.26 = 1,217.49/x
  3. Step 3: Cross multiply
    1,490.87x = 2,226.26 × 1,217.49
  4. Step 4: Simplify right side
    1,490.87x = 2,710,443.20
  5. Step 5: Solve for x
    x = 2,710,443.20/1,490.87
  6. Step 6: Final answer
    x = 1,818.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.