Home / 1,591.49-2,386.30-480.57

Finding the Fourth Proportional to 1,591.49, 2,386.30 and 480.57

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Solution

The fourth proportional to 1,591.49, 2,386.30 and 480.57 is: 720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.49 : 2,386.30 = 480.57 : x
  2. Step 2: Convert to fraction form
    1,591.49/2,386.30 = 480.57/x
  3. Step 3: Cross multiply
    1,591.49x = 2,386.30 × 480.57
  4. Step 4: Simplify right side
    1,591.49x = 1,146,784.33
  5. Step 5: Solve for x
    x = 1,146,784.33/1,591.49
  6. Step 6: Final answer
    x = 720.57

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1.5x scale

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.