Home / 5,428.10-8,142.15-4,881.35

Finding the Fourth Proportional to 5,428.10, 8,142.15 and 4,881.35

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Solution

The fourth proportional to 5,428.10, 8,142.15 and 4,881.35 is: 7,322.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.10 : 8,142.15 = 4,881.35 : x
  2. Step 2: Convert to fraction form
    5,428.10/8,142.15 = 4,881.35/x
  3. Step 3: Cross multiply
    5,428.10x = 8,142.15 × 4,881.35
  4. Step 4: Simplify right side
    5,428.10x = 39,744,683.90
  5. Step 5: Solve for x
    x = 39,744,683.90/5,428.10
  6. Step 6: Final answer
    x = 7,322.03

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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.