Home / 2,345.70-3,238.65-2,148.42

Finding the Fourth Proportional to 2,345.70, 3,238.65 and 2,148.42

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Solution

The fourth proportional to 2,345.70, 3,238.65 and 2,148.42 is: 2,966.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.70 : 3,238.65 = 2,148.42 : x
  2. Step 2: Convert to fraction form
    2,345.70/3,238.65 = 2,148.42/x
  3. Step 3: Cross multiply
    2,345.70x = 3,238.65 × 2,148.42
  4. Step 4: Simplify right side
    2,345.70x = 6,957,980.43
  5. Step 5: Solve for x
    x = 6,957,980.43/2,345.70
  6. Step 6: Final answer
    x = 2,966.27

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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.