Home / 6,428.58-8,870.08-3,774.45

Finding the Fourth Proportional to 6,428.58, 8,870.08 and 3,774.45

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Solution

The fourth proportional to 6,428.58, 8,870.08 and 3,774.45 is: 5,207.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.58 : 8,870.08 = 3,774.45 : x
  2. Step 2: Convert to fraction form
    6,428.58/8,870.08 = 3,774.45/x
  3. Step 3: Cross multiply
    6,428.58x = 8,870.08 × 3,774.45
  4. Step 4: Simplify right side
    6,428.58x = 33,479,673.46
  5. Step 5: Solve for x
    x = 33,479,673.46/6,428.58
  6. Step 6: Final answer
    x = 5,207.94

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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.