Home / 5,228.07-7,212.68-2,988.74

Finding the Fourth Proportional to 5,228.07, 7,212.68 and 2,988.74

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Solution

The fourth proportional to 5,228.07, 7,212.68 and 2,988.74 is: 4,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.07 : 7,212.68 = 2,988.74 : x
  2. Step 2: Convert to fraction form
    5,228.07/7,212.68 = 2,988.74/x
  3. Step 3: Cross multiply
    5,228.07x = 7,212.68 × 2,988.74
  4. Step 4: Simplify right side
    5,228.07x = 21,556,839.52
  5. Step 5: Solve for x
    x = 21,556,839.52/5,228.07
  6. Step 6: Final answer
    x = 4,123.29

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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.