Home / 1,384.24-2,077.80-1,019.20

Finding the Fourth Proportional to 1,384.24, 2,077.80 and 1,019.20

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Solution

The fourth proportional to 1,384.24, 2,077.80 and 1,019.20 is: 1,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.24 : 2,077.80 = 1,019.20 : x
  2. Step 2: Convert to fraction form
    1,384.24/2,077.80 = 1,019.20/x
  3. Step 3: Cross multiply
    1,384.24x = 2,077.80 × 1,019.20
  4. Step 4: Simplify right side
    1,384.24x = 2,117,693.76
  5. Step 5: Solve for x
    x = 2,117,693.76/1,384.24
  6. Step 6: Final answer
    x = 1,529.86

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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.