Home / 5,399.49-7,430.61-5,247.21

Finding the Fourth Proportional to 5,399.49, 7,430.61 and 5,247.21

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Solution

The fourth proportional to 5,399.49, 7,430.61 and 5,247.21 is: 7,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.49 : 7,430.61 = 5,247.21 : x
  2. Step 2: Convert to fraction form
    5,399.49/7,430.61 = 5,247.21/x
  3. Step 3: Cross multiply
    5,399.49x = 7,430.61 × 5,247.21
  4. Step 4: Simplify right side
    5,399.49x = 38,989,971.10
  5. Step 5: Solve for x
    x = 38,989,971.10/5,399.49
  6. Step 6: Final answer
    x = 7,221.05

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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.