Home / 6,428.45-8,870.06-3,774.89

Finding the Fourth Proportional to 6,428.45, 8,870.06 and 3,774.89

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Solution

The fourth proportional to 6,428.45, 8,870.06 and 3,774.89 is: 5,208.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.45 : 8,870.06 = 3,774.89 : x
  2. Step 2: Convert to fraction form
    6,428.45/8,870.06 = 3,774.89/x
  3. Step 3: Cross multiply
    6,428.45x = 8,870.06 × 3,774.89
  4. Step 4: Simplify right side
    6,428.45x = 33,483,437.57
  5. Step 5: Solve for x
    x = 33,483,437.57/6,428.45
  6. Step 6: Final answer
    x = 5,208.64

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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.