Home / 2,339.54-3,228.78-1,345.40

Finding the Fourth Proportional to 2,339.54, 3,228.78 and 1,345.40

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Solution

The fourth proportional to 2,339.54, 3,228.78 and 1,345.40 is: 1,856.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.54 : 3,228.78 = 1,345.40 : x
  2. Step 2: Convert to fraction form
    2,339.54/3,228.78 = 1,345.40/x
  3. Step 3: Cross multiply
    2,339.54x = 3,228.78 × 1,345.40
  4. Step 4: Simplify right side
    2,339.54x = 4,343,977.74
  5. Step 5: Solve for x
    x = 4,343,977.74/2,339.54
  6. Step 6: Final answer
    x = 1,856.77

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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.