Home / 2,864.92-3,953.88-1,686.40

Finding the Fourth Proportional to 2,864.92, 3,953.88 and 1,686.40

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Solution

The fourth proportional to 2,864.92, 3,953.88 and 1,686.40 is: 2,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.92 : 3,953.88 = 1,686.40 : x
  2. Step 2: Convert to fraction form
    2,864.92/3,953.88 = 1,686.40/x
  3. Step 3: Cross multiply
    2,864.92x = 3,953.88 × 1,686.40
  4. Step 4: Simplify right side
    2,864.92x = 6,667,823.23
  5. Step 5: Solve for x
    x = 6,667,823.23/2,864.92
  6. Step 6: Final answer
    x = 2,327.40

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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.