Home / 5,428.08-8,136.60-2,143.50

Finding the Fourth Proportional to 5,428.08, 8,136.60 and 2,143.50

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Solution

The fourth proportional to 5,428.08, 8,136.60 and 2,143.50 is: 3,213.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.08 : 8,136.60 = 2,143.50 : x
  2. Step 2: Convert to fraction form
    5,428.08/8,136.60 = 2,143.50/x
  3. Step 3: Cross multiply
    5,428.08x = 8,136.60 × 2,143.50
  4. Step 4: Simplify right side
    5,428.08x = 17,440,802.10
  5. Step 5: Solve for x
    x = 17,440,802.10/5,428.08
  6. Step 6: Final answer
    x = 3,213.07

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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.