Home / 1,945.47-2,685.09-1,159.56

Finding the Fourth Proportional to 1,945.47, 2,685.09 and 1,159.56

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Solution

The fourth proportional to 1,945.47, 2,685.09 and 1,159.56 is: 1,600.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.47 : 2,685.09 = 1,159.56 : x
  2. Step 2: Convert to fraction form
    1,945.47/2,685.09 = 1,159.56/x
  3. Step 3: Cross multiply
    1,945.47x = 2,685.09 × 1,159.56
  4. Step 4: Simplify right side
    1,945.47x = 3,113,529.67
  5. Step 5: Solve for x
    x = 3,113,529.67/1,945.47
  6. Step 6: Final answer
    x = 1,600.40

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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.