Home / 1,931.94-2,666.07-1,047.69

Finding the Fourth Proportional to 1,931.94, 2,666.07 and 1,047.69

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Solution

The fourth proportional to 1,931.94, 2,666.07 and 1,047.69 is: 1,445.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.94 : 2,666.07 = 1,047.69 : x
  2. Step 2: Convert to fraction form
    1,931.94/2,666.07 = 1,047.69/x
  3. Step 3: Cross multiply
    1,931.94x = 2,666.07 × 1,047.69
  4. Step 4: Simplify right side
    1,931.94x = 2,793,214.88
  5. Step 5: Solve for x
    x = 2,793,214.88/1,931.94
  6. Step 6: Final answer
    x = 1,445.81

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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.