Home / 1,207.61-1,815.12-1,047.23

Finding the Fourth Proportional to 1,207.61, 1,815.12 and 1,047.23

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Solution

The fourth proportional to 1,207.61, 1,815.12 and 1,047.23 is: 1,574.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.61 : 1,815.12 = 1,047.23 : x
  2. Step 2: Convert to fraction form
    1,207.61/1,815.12 = 1,047.23/x
  3. Step 3: Cross multiply
    1,207.61x = 1,815.12 × 1,047.23
  4. Step 4: Simplify right side
    1,207.61x = 1,900,848.12
  5. Step 5: Solve for x
    x = 1,900,848.12/1,207.61
  6. Step 6: Final answer
    x = 1,574.06

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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.