Home / 2,291.60-3,156.56-1,937.12

Finding the Fourth Proportional to 2,291.60, 3,156.56 and 1,937.12

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Solution

The fourth proportional to 2,291.60, 3,156.56 and 1,937.12 is: 2,668.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.60 : 3,156.56 = 1,937.12 : x
  2. Step 2: Convert to fraction form
    2,291.60/3,156.56 = 1,937.12/x
  3. Step 3: Cross multiply
    2,291.60x = 3,156.56 × 1,937.12
  4. Step 4: Simplify right side
    2,291.60x = 6,114,635.51
  5. Step 5: Solve for x
    x = 6,114,635.51/2,291.60
  6. Step 6: Final answer
    x = 2,668.28

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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.