Home / 1,931.67-2,666.34-1,186.25

Finding the Fourth Proportional to 1,931.67, 2,666.34 and 1,186.25

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Solution

The fourth proportional to 1,931.67, 2,666.34 and 1,186.25 is: 1,637.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.67 : 2,666.34 = 1,186.25 : x
  2. Step 2: Convert to fraction form
    1,931.67/2,666.34 = 1,186.25/x
  3. Step 3: Cross multiply
    1,931.67x = 2,666.34 × 1,186.25
  4. Step 4: Simplify right side
    1,931.67x = 3,162,932.49
  5. Step 5: Solve for x
    x = 3,162,932.49/1,931.67
  6. Step 6: Final answer
    x = 1,637.41

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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.