Home / 10,287.19-15,430.79-2,892.40

Finding the Fourth Proportional to 10,287.19, 15,430.79 and 2,892.40

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Solution

The fourth proportional to 10,287.19, 15,430.79 and 2,892.40 is: 4,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.19 : 15,430.79 = 2,892.40 : x
  2. Step 2: Convert to fraction form
    10,287.19/15,430.79 = 2,892.40/x
  3. Step 3: Cross multiply
    10,287.19x = 15,430.79 × 2,892.40
  4. Step 4: Simplify right side
    10,287.19x = 44,632,017.00
  5. Step 5: Solve for x
    x = 44,632,017.00/10,287.19
  6. Step 6: Final answer
    x = 4,338.60

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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.