Home / 2,131.63-2,941.64-1,248.19

Finding the Fourth Proportional to 2,131.63, 2,941.64 and 1,248.19

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Solution

The fourth proportional to 2,131.63, 2,941.64 and 1,248.19 is: 1,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.63 : 2,941.64 = 1,248.19 : x
  2. Step 2: Convert to fraction form
    2,131.63/2,941.64 = 1,248.19/x
  3. Step 3: Cross multiply
    2,131.63x = 2,941.64 × 1,248.19
  4. Step 4: Simplify right side
    2,131.63x = 3,671,725.63
  5. Step 5: Solve for x
    x = 3,671,725.63/2,131.63
  6. Step 6: Final answer
    x = 1,722.50

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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.