Home / 5,381.20-7,428.48-4,055.36

Finding the Fourth Proportional to 5,381.20, 7,428.48 and 4,055.36

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Solution

The fourth proportional to 5,381.20, 7,428.48 and 4,055.36 is: 5,598.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.20 : 7,428.48 = 4,055.36 : x
  2. Step 2: Convert to fraction form
    5,381.20/7,428.48 = 4,055.36/x
  3. Step 3: Cross multiply
    5,381.20x = 7,428.48 × 4,055.36
  4. Step 4: Simplify right side
    5,381.20x = 30,125,160.65
  5. Step 5: Solve for x
    x = 30,125,160.65/5,381.20
  6. Step 6: Final answer
    x = 5,598.22

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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.