Home / 3,315.36-4,973.28-1,123.20

Finding the Fourth Proportional to 3,315.36, 4,973.28 and 1,123.20

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Solution

The fourth proportional to 3,315.36, 4,973.28 and 1,123.20 is: 1,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.36 : 4,973.28 = 1,123.20 : x
  2. Step 2: Convert to fraction form
    3,315.36/4,973.28 = 1,123.20/x
  3. Step 3: Cross multiply
    3,315.36x = 4,973.28 × 1,123.20
  4. Step 4: Simplify right side
    3,315.36x = 5,585,988.10
  5. Step 5: Solve for x
    x = 5,585,988.10/3,315.36
  6. Step 6: Final answer
    x = 1,684.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.