Home / 2,384.75-3,291.64-1,440.39

Finding the Fourth Proportional to 2,384.75, 3,291.64 and 1,440.39

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Solution

The fourth proportional to 2,384.75, 3,291.64 and 1,440.39 is: 1,988.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,384.75 : 3,291.64 = 1,440.39 : x
  2. Step 2: Convert to fraction form
    2,384.75/3,291.64 = 1,440.39/x
  3. Step 3: Cross multiply
    2,384.75x = 3,291.64 × 1,440.39
  4. Step 4: Simplify right side
    2,384.75x = 4,741,231.71
  5. Step 5: Solve for x
    x = 4,741,231.71/2,384.75
  6. Step 6: Final answer
    x = 1,988.15

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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.