Home / 5,085.12-7,016.40-2,988.48

Finding the Fourth Proportional to 5,085.12, 7,016.40 and 2,988.48

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Solution

The fourth proportional to 5,085.12, 7,016.40 and 2,988.48 is: 4,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.12 : 7,016.40 = 2,988.48 : x
  2. Step 2: Convert to fraction form
    5,085.12/7,016.40 = 2,988.48/x
  3. Step 3: Cross multiply
    5,085.12x = 7,016.40 × 2,988.48
  4. Step 4: Simplify right side
    5,085.12x = 20,968,371.07
  5. Step 5: Solve for x
    x = 20,968,371.07/5,085.12
  6. Step 6: Final answer
    x = 4,123.48

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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.