Home / 1,665.09-2,494.60-1,117.80

Finding the Fourth Proportional to 1,665.09, 2,494.60 and 1,117.80

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Solution

The fourth proportional to 1,665.09, 2,494.60 and 1,117.80 is: 1,674.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.09 : 2,494.60 = 1,117.80 : x
  2. Step 2: Convert to fraction form
    1,665.09/2,494.60 = 1,117.80/x
  3. Step 3: Cross multiply
    1,665.09x = 2,494.60 × 1,117.80
  4. Step 4: Simplify right side
    1,665.09x = 2,788,461.09
  5. Step 5: Solve for x
    x = 2,788,461.09/1,665.09
  6. Step 6: Final answer
    x = 1,674.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.