Home / 1,440.12-2,159.64-824.28

Finding the Fourth Proportional to 1,440.12, 2,159.64 and 824.28

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Solution

The fourth proportional to 1,440.12, 2,159.64 and 824.28 is: 1,236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.12 : 2,159.64 = 824.28 : x
  2. Step 2: Convert to fraction form
    1,440.12/2,159.64 = 824.28/x
  3. Step 3: Cross multiply
    1,440.12x = 2,159.64 × 824.28
  4. Step 4: Simplify right side
    1,440.12x = 1,780,148.06
  5. Step 5: Solve for x
    x = 1,780,148.06/1,440.12
  6. Step 6: Final answer
    x = 1,236.11

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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.