Home / 2,386.11-3,292.85-1,392.08

Finding the Fourth Proportional to 2,386.11, 3,292.85 and 1,392.08

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Solution

The fourth proportional to 2,386.11, 3,292.85 and 1,392.08 is: 1,921.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.11 : 3,292.85 = 1,392.08 : x
  2. Step 2: Convert to fraction form
    2,386.11/3,292.85 = 1,392.08/x
  3. Step 3: Cross multiply
    2,386.11x = 3,292.85 × 1,392.08
  4. Step 4: Simplify right side
    2,386.11x = 4,583,887.20
  5. Step 5: Solve for x
    x = 4,583,887.20/2,386.11
  6. Step 6: Final answer
    x = 1,921.07

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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.