Home / 2,619.64-3,615.18-1,440.79

Finding the Fourth Proportional to 2,619.64, 3,615.18 and 1,440.79

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Solution

The fourth proportional to 2,619.64, 3,615.18 and 1,440.79 is: 1,988.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.64 : 3,615.18 = 1,440.79 : x
  2. Step 2: Convert to fraction form
    2,619.64/3,615.18 = 1,440.79/x
  3. Step 3: Cross multiply
    2,619.64x = 3,615.18 × 1,440.79
  4. Step 4: Simplify right side
    2,619.64x = 5,208,697.12
  5. Step 5: Solve for x
    x = 5,208,697.12/2,619.64
  6. Step 6: Final answer
    x = 1,988.33

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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.