Home / 2,291.07-3,160.77-1,405.33

Finding the Fourth Proportional to 2,291.07, 3,160.77 and 1,405.33

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Solution

The fourth proportional to 2,291.07, 3,160.77 and 1,405.33 is: 1,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.07 : 3,160.77 = 1,405.33 : x
  2. Step 2: Convert to fraction form
    2,291.07/3,160.77 = 1,405.33/x
  3. Step 3: Cross multiply
    2,291.07x = 3,160.77 × 1,405.33
  4. Step 4: Simplify right side
    2,291.07x = 4,441,937.42
  5. Step 5: Solve for x
    x = 4,441,937.42/2,291.07
  6. Step 6: Final answer
    x = 1,938.81

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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.