Home / 1,490.58-2,055.25-1,209.93

Finding the Fourth Proportional to 1,490.58, 2,055.25 and 1,209.93

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Solution

The fourth proportional to 1,490.58, 2,055.25 and 1,209.93 is: 1,668.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.58 : 2,055.25 = 1,209.93 : x
  2. Step 2: Convert to fraction form
    1,490.58/2,055.25 = 1,209.93/x
  3. Step 3: Cross multiply
    1,490.58x = 2,055.25 × 1,209.93
  4. Step 4: Simplify right side
    1,490.58x = 2,486,705.61
  5. Step 5: Solve for x
    x = 2,486,705.61/1,490.58
  6. Step 6: Final answer
    x = 1,668.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.