Home / 2,287.24-3,156.41-1,239.31

Finding the Fourth Proportional to 2,287.24, 3,156.41 and 1,239.31

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Solution

The fourth proportional to 2,287.24, 3,156.41 and 1,239.31 is: 1,710.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.24 : 3,156.41 = 1,239.31 : x
  2. Step 2: Convert to fraction form
    2,287.24/3,156.41 = 1,239.31/x
  3. Step 3: Cross multiply
    2,287.24x = 3,156.41 × 1,239.31
  4. Step 4: Simplify right side
    2,287.24x = 3,911,751.60
  5. Step 5: Solve for x
    x = 3,911,751.60/2,287.24
  6. Step 6: Final answer
    x = 1,710.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.