Home / 1,490.96-2,055.77-1,210.31

Finding the Fourth Proportional to 1,490.96, 2,055.77 and 1,210.31

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Solution

The fourth proportional to 1,490.96, 2,055.77 and 1,210.31 is: 1,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.96 : 2,055.77 = 1,210.31 : x
  2. Step 2: Convert to fraction form
    1,490.96/2,055.77 = 1,210.31/x
  3. Step 3: Cross multiply
    1,490.96x = 2,055.77 × 1,210.31
  4. Step 4: Simplify right side
    1,490.96x = 2,488,102.66
  5. Step 5: Solve for x
    x = 2,488,102.66/1,490.96
  6. Step 6: Final answer
    x = 1,668.80

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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.