Home / 2,345.49-3,239.91-1,908.70

Finding the Fourth Proportional to 2,345.49, 3,239.91 and 1,908.70

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Solution

The fourth proportional to 2,345.49, 3,239.91 and 1,908.70 is: 2,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.49 : 3,239.91 = 1,908.70 : x
  2. Step 2: Convert to fraction form
    2,345.49/3,239.91 = 1,908.70/x
  3. Step 3: Cross multiply
    2,345.49x = 3,239.91 × 1,908.70
  4. Step 4: Simplify right side
    2,345.49x = 6,184,008.12
  5. Step 5: Solve for x
    x = 6,184,008.12/2,345.49
  6. Step 6: Final answer
    x = 2,636.55

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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.