Home / 2,131.08-2,941.26-1,345.56

Finding the Fourth Proportional to 2,131.08, 2,941.26 and 1,345.56

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Solution

The fourth proportional to 2,131.08, 2,941.26 and 1,345.56 is: 1,857.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.08 : 2,941.26 = 1,345.56 : x
  2. Step 2: Convert to fraction form
    2,131.08/2,941.26 = 1,345.56/x
  3. Step 3: Cross multiply
    2,131.08x = 2,941.26 × 1,345.56
  4. Step 4: Simplify right side
    2,131.08x = 3,957,641.81
  5. Step 5: Solve for x
    x = 3,957,641.81/2,131.08
  6. Step 6: Final answer
    x = 1,857.11

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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.