Home / 5,085.81-7,016.09-2,988.45

Finding the Fourth Proportional to 5,085.81, 7,016.09 and 2,988.45

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Solution

The fourth proportional to 5,085.81, 7,016.09 and 2,988.45 is: 4,122.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.81 : 7,016.09 = 2,988.45 : x
  2. Step 2: Convert to fraction form
    5,085.81/7,016.09 = 2,988.45/x
  3. Step 3: Cross multiply
    5,085.81x = 7,016.09 × 2,988.45
  4. Step 4: Simplify right side
    5,085.81x = 20,967,219.22
  5. Step 5: Solve for x
    x = 20,967,219.22/5,085.81
  6. Step 6: Final answer
    x = 4,122.69

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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.