Home / 3,678.81-5,073.30-2,838.16

Finding the Fourth Proportional to 3,678.81, 5,073.30 and 2,838.16

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Solution

The fourth proportional to 3,678.81, 5,073.30 and 2,838.16 is: 3,913.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.81 : 5,073.30 = 2,838.16 : x
  2. Step 2: Convert to fraction form
    3,678.81/5,073.30 = 2,838.16/x
  3. Step 3: Cross multiply
    3,678.81x = 5,073.30 × 2,838.16
  4. Step 4: Simplify right side
    3,678.81x = 14,398,837.13
  5. Step 5: Solve for x
    x = 14,398,837.13/3,678.81
  6. Step 6: Final answer
    x = 3,913.99

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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.