Home / 3,905.61-5,828.41-3,490.39

Finding the Fourth Proportional to 3,905.61, 5,828.41 and 3,490.39

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Solution

The fourth proportional to 3,905.61, 5,828.41 and 3,490.39 is: 5,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.61 : 5,828.41 = 3,490.39 : x
  2. Step 2: Convert to fraction form
    3,905.61/5,828.41 = 3,490.39/x
  3. Step 3: Cross multiply
    3,905.61x = 5,828.41 × 3,490.39
  4. Step 4: Simplify right side
    3,905.61x = 20,343,423.98
  5. Step 5: Solve for x
    x = 20,343,423.98/3,905.61
  6. Step 6: Final answer
    x = 5,208.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.