Home / 2,900.36-4,001.88-1,781.48

Finding the Fourth Proportional to 2,900.36, 4,001.88 and 1,781.48

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Solution

The fourth proportional to 2,900.36, 4,001.88 and 1,781.48 is: 2,458.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.36 : 4,001.88 = 1,781.48 : x
  2. Step 2: Convert to fraction form
    2,900.36/4,001.88 = 1,781.48/x
  3. Step 3: Cross multiply
    2,900.36x = 4,001.88 × 1,781.48
  4. Step 4: Simplify right side
    2,900.36x = 7,129,269.18
  5. Step 5: Solve for x
    x = 7,129,269.18/2,900.36
  6. Step 6: Final answer
    x = 2,458.06

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1.5x scale

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.