Home / 2,667.47-3,681.45-1,488.78

Finding the Fourth Proportional to 2,667.47, 3,681.45 and 1,488.78

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Solution

The fourth proportional to 2,667.47, 3,681.45 and 1,488.78 is: 2,054.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.47 : 3,681.45 = 1,488.78 : x
  2. Step 2: Convert to fraction form
    2,667.47/3,681.45 = 1,488.78/x
  3. Step 3: Cross multiply
    2,667.47x = 3,681.45 × 1,488.78
  4. Step 4: Simplify right side
    2,667.47x = 5,480,869.13
  5. Step 5: Solve for x
    x = 5,480,869.13/2,667.47
  6. Step 6: Final answer
    x = 2,054.71

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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.