Home / 1,547.67-2,321.19-1,289.34

Finding the Fourth Proportional to 1,547.67, 2,321.19 and 1,289.34

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Solution

The fourth proportional to 1,547.67, 2,321.19 and 1,289.34 is: 1,933.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.67 : 2,321.19 = 1,289.34 : x
  2. Step 2: Convert to fraction form
    1,547.67/2,321.19 = 1,289.34/x
  3. Step 3: Cross multiply
    1,547.67x = 2,321.19 × 1,289.34
  4. Step 4: Simplify right side
    1,547.67x = 2,992,803.11
  5. Step 5: Solve for x
    x = 2,992,803.11/1,547.67
  6. Step 6: Final answer
    x = 1,933.75

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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.