Home / 8,225.28-12,316.08-6,428.46

Finding the Fourth Proportional to 8,225.28, 12,316.08 and 6,428.46

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Solution

The fourth proportional to 8,225.28, 12,316.08 and 6,428.46 is: 9,625.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,225.28 : 12,316.08 = 6,428.46 : x
  2. Step 2: Convert to fraction form
    8,225.28/12,316.08 = 6,428.46/x
  3. Step 3: Cross multiply
    8,225.28x = 12,316.08 × 6,428.46
  4. Step 4: Simplify right side
    8,225.28x = 79,173,427.64
  5. Step 5: Solve for x
    x = 79,173,427.64/8,225.28
  6. Step 6: Final answer
    x = 9,625.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.