Home / 1,490.86-2,226.25-1,217.48

Finding the Fourth Proportional to 1,490.86, 2,226.25 and 1,217.48

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Solution

The fourth proportional to 1,490.86, 2,226.25 and 1,217.48 is: 1,818.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.86 : 2,226.25 = 1,217.48 : x
  2. Step 2: Convert to fraction form
    1,490.86/2,226.25 = 1,217.48/x
  3. Step 3: Cross multiply
    1,490.86x = 2,226.25 × 1,217.48
  4. Step 4: Simplify right side
    1,490.86x = 2,710,408.76
  5. Step 5: Solve for x
    x = 2,710,408.76/1,490.86
  6. Step 6: Final answer
    x = 1,818.02

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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.