Home / 7,480.80-10,317.92-5,490.72

Finding the Fourth Proportional to 7,480.80, 10,317.92 and 5,490.72

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Solution

The fourth proportional to 7,480.80, 10,317.92 and 5,490.72 is: 7,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.80 : 10,317.92 = 5,490.72 : x
  2. Step 2: Convert to fraction form
    7,480.80/10,317.92 = 5,490.72/x
  3. Step 3: Cross multiply
    7,480.80x = 10,317.92 × 5,490.72
  4. Step 4: Simplify right side
    7,480.80x = 56,652,809.70
  5. Step 5: Solve for x
    x = 56,652,809.70/7,480.80
  6. Step 6: Final answer
    x = 7,573.10

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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.