Home / 1,903.72-2,627.76-1,117.75

Finding the Fourth Proportional to 1,903.72, 2,627.76 and 1,117.75

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Solution

The fourth proportional to 1,903.72, 2,627.76 and 1,117.75 is: 1,542.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.72 : 2,627.76 = 1,117.75 : x
  2. Step 2: Convert to fraction form
    1,903.72/2,627.76 = 1,117.75/x
  3. Step 3: Cross multiply
    1,903.72x = 2,627.76 × 1,117.75
  4. Step 4: Simplify right side
    1,903.72x = 2,937,178.74
  5. Step 5: Solve for x
    x = 2,937,178.74/1,903.72
  6. Step 6: Final answer
    x = 1,542.86

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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.