Home / 6,428.91-8,869.32-3,775.35

Finding the Fourth Proportional to 6,428.91, 8,869.32 and 3,775.35

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Solution

The fourth proportional to 6,428.91, 8,869.32 and 3,775.35 is: 5,208.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.91 : 8,869.32 = 3,775.35 : x
  2. Step 2: Convert to fraction form
    6,428.91/8,869.32 = 3,775.35/x
  3. Step 3: Cross multiply
    6,428.91x = 8,869.32 × 3,775.35
  4. Step 4: Simplify right side
    6,428.91x = 33,484,787.26
  5. Step 5: Solve for x
    x = 33,484,787.26/6,428.91
  6. Step 6: Final answer
    x = 5,208.47

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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.