Home / 1,627.48-2,439.36-653.08

Finding the Fourth Proportional to 1,627.48, 2,439.36 and 653.08

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Solution

The fourth proportional to 1,627.48, 2,439.36 and 653.08 is: 978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.48 : 2,439.36 = 653.08 : x
  2. Step 2: Convert to fraction form
    1,627.48/2,439.36 = 653.08/x
  3. Step 3: Cross multiply
    1,627.48x = 2,439.36 × 653.08
  4. Step 4: Simplify right side
    1,627.48x = 1,593,097.23
  5. Step 5: Solve for x
    x = 1,593,097.23/1,627.48
  6. Step 6: Final answer
    x = 978.87

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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.