Home / 5,126.03-7,688.91-1,428.11

Finding the Fourth Proportional to 5,126.03, 7,688.91 and 1,428.11

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Solution

The fourth proportional to 5,126.03, 7,688.91 and 1,428.11 is: 2,142.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.03 : 7,688.91 = 1,428.11 : x
  2. Step 2: Convert to fraction form
    5,126.03/7,688.91 = 1,428.11/x
  3. Step 3: Cross multiply
    5,126.03x = 7,688.91 × 1,428.11
  4. Step 4: Simplify right side
    5,126.03x = 10,980,609.26
  5. Step 5: Solve for x
    x = 10,980,609.26/5,126.03
  6. Step 6: Final answer
    x = 2,142.13

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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.