Home / 4,667.80-6,439.16-2,987.40

Finding the Fourth Proportional to 4,667.80, 6,439.16 and 2,987.40

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Solution

The fourth proportional to 4,667.80, 6,439.16 and 2,987.40 is: 4,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,667.80 : 6,439.16 = 2,987.40 : x
  2. Step 2: Convert to fraction form
    4,667.80/6,439.16 = 2,987.40/x
  3. Step 3: Cross multiply
    4,667.80x = 6,439.16 × 2,987.40
  4. Step 4: Simplify right side
    4,667.80x = 19,236,346.58
  5. Step 5: Solve for x
    x = 19,236,346.58/4,667.80
  6. Step 6: Final answer
    x = 4,121.07

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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.