Home / 2,987.74-4,123.47-2,044.50

Finding the Fourth Proportional to 2,987.74, 4,123.47 and 2,044.50

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Solution

The fourth proportional to 2,987.74, 4,123.47 and 2,044.50 is: 2,821.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.74 : 4,123.47 = 2,044.50 : x
  2. Step 2: Convert to fraction form
    2,987.74/4,123.47 = 2,044.50/x
  3. Step 3: Cross multiply
    2,987.74x = 4,123.47 × 2,044.50
  4. Step 4: Simplify right side
    2,987.74x = 8,430,434.42
  5. Step 5: Solve for x
    x = 8,430,434.42/2,987.74
  6. Step 6: Final answer
    x = 2,821.68

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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.