Home / 1,359.72-2,038.80-1,243.62

Finding the Fourth Proportional to 1,359.72, 2,038.80 and 1,243.62

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Solution

The fourth proportional to 1,359.72, 2,038.80 and 1,243.62 is: 1,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.72 : 2,038.80 = 1,243.62 : x
  2. Step 2: Convert to fraction form
    1,359.72/2,038.80 = 1,243.62/x
  3. Step 3: Cross multiply
    1,359.72x = 2,038.80 × 1,243.62
  4. Step 4: Simplify right side
    1,359.72x = 2,535,492.46
  5. Step 5: Solve for x
    x = 2,535,492.46/1,359.72
  6. Step 6: Final answer
    x = 1,864.72

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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.