Home / 5,112.81-7,047.18-3,618.81

Finding the Fourth Proportional to 5,112.81, 7,047.18 and 3,618.81

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Solution

The fourth proportional to 5,112.81, 7,047.18 and 3,618.81 is: 4,987.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.81 : 7,047.18 = 3,618.81 : x
  2. Step 2: Convert to fraction form
    5,112.81/7,047.18 = 3,618.81/x
  3. Step 3: Cross multiply
    5,112.81x = 7,047.18 × 3,618.81
  4. Step 4: Simplify right side
    5,112.81x = 25,502,405.46
  5. Step 5: Solve for x
    x = 25,502,405.46/5,112.81
  6. Step 6: Final answer
    x = 4,987.94

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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.