Home / 2,619.84-3,615.38-1,440.91

Finding the Fourth Proportional to 2,619.84, 3,615.38 and 1,440.91

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Solution

The fourth proportional to 2,619.84, 3,615.38 and 1,440.91 is: 1,988.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.84 : 3,615.38 = 1,440.91 : x
  2. Step 2: Convert to fraction form
    2,619.84/3,615.38 = 1,440.91/x
  3. Step 3: Cross multiply
    2,619.84x = 3,615.38 × 1,440.91
  4. Step 4: Simplify right side
    2,619.84x = 5,209,458.19
  5. Step 5: Solve for x
    x = 5,209,458.19/2,619.84
  6. Step 6: Final answer
    x = 1,988.46

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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.