Home / 1,931.39-2,666.09-1,342.27

Finding the Fourth Proportional to 1,931.39, 2,666.09 and 1,342.27

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Solution

The fourth proportional to 1,931.39, 2,666.09 and 1,342.27 is: 1,852.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.39 : 2,666.09 = 1,342.27 : x
  2. Step 2: Convert to fraction form
    1,931.39/2,666.09 = 1,342.27/x
  3. Step 3: Cross multiply
    1,931.39x = 2,666.09 × 1,342.27
  4. Step 4: Simplify right side
    1,931.39x = 3,578,615.54
  5. Step 5: Solve for x
    x = 3,578,615.54/1,931.39
  6. Step 6: Final answer
    x = 1,852.87

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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.