Home / 10,287.07-15,431.20-2,892.10

Finding the Fourth Proportional to 10,287.07, 15,431.20 and 2,892.10

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Solution

The fourth proportional to 10,287.07, 15,431.20 and 2,892.10 is: 4,338.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.07 : 15,431.20 = 2,892.10 : x
  2. Step 2: Convert to fraction form
    10,287.07/15,431.20 = 2,892.10/x
  3. Step 3: Cross multiply
    10,287.07x = 15,431.20 × 2,892.10
  4. Step 4: Simplify right side
    10,287.07x = 44,628,573.52
  5. Step 5: Solve for x
    x = 44,628,573.52/10,287.07
  6. Step 6: Final answer
    x = 4,338.32

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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.