Home / 7,420.54-11,128.99-2,490.07

Finding the Fourth Proportional to 7,420.54, 11,128.99 and 2,490.07

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Solution

The fourth proportional to 7,420.54, 11,128.99 and 2,490.07 is: 3,734.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.54 : 11,128.99 = 2,490.07 : x
  2. Step 2: Convert to fraction form
    7,420.54/11,128.99 = 2,490.07/x
  3. Step 3: Cross multiply
    7,420.54x = 11,128.99 × 2,490.07
  4. Step 4: Simplify right side
    7,420.54x = 27,711,964.13
  5. Step 5: Solve for x
    x = 27,711,964.13/7,420.54
  6. Step 6: Final answer
    x = 3,734.49

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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.