Home / 2,619.68-3,615.12-1,440.77

Finding the Fourth Proportional to 2,619.68, 3,615.12 and 1,440.77

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Solution

The fourth proportional to 2,619.68, 3,615.12 and 1,440.77 is: 1,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.68 : 3,615.12 = 1,440.77 : x
  2. Step 2: Convert to fraction form
    2,619.68/3,615.12 = 1,440.77/x
  3. Step 3: Cross multiply
    2,619.68x = 3,615.12 × 1,440.77
  4. Step 4: Simplify right side
    2,619.68x = 5,208,538.37
  5. Step 5: Solve for x
    x = 5,208,538.37/2,619.68
  6. Step 6: Final answer
    x = 1,988.24

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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.