Home / 1,439.42-2,158.58-514.81

Finding the Fourth Proportional to 1,439.42, 2,158.58 and 514.81

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Solution

The fourth proportional to 1,439.42, 2,158.58 and 514.81 is: 772.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.42 : 2,158.58 = 514.81 : x
  2. Step 2: Convert to fraction form
    1,439.42/2,158.58 = 514.81/x
  3. Step 3: Cross multiply
    1,439.42x = 2,158.58 × 514.81
  4. Step 4: Simplify right side
    1,439.42x = 1,111,254.46
  5. Step 5: Solve for x
    x = 1,111,254.46/1,439.42
  6. Step 6: Final answer
    x = 772.01

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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.