Home / 1,490.36-2,225.50-1,216.98

Finding the Fourth Proportional to 1,490.36, 2,225.50 and 1,216.98

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Solution

The fourth proportional to 1,490.36, 2,225.50 and 1,216.98 is: 1,817.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.36 : 2,225.50 = 1,216.98 : x
  2. Step 2: Convert to fraction form
    1,490.36/2,225.50 = 1,216.98/x
  3. Step 3: Cross multiply
    1,490.36x = 2,225.50 × 1,216.98
  4. Step 4: Simplify right side
    1,490.36x = 2,708,388.99
  5. Step 5: Solve for x
    x = 2,708,388.99/1,490.36
  6. Step 6: Final answer
    x = 1,817.27

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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.