Home / 5,130.28-7,078.50-3,035.08

Finding the Fourth Proportional to 5,130.28, 7,078.50 and 3,035.08

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Solution

The fourth proportional to 5,130.28, 7,078.50 and 3,035.08 is: 4,187.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.28 : 7,078.50 = 3,035.08 : x
  2. Step 2: Convert to fraction form
    5,130.28/7,078.50 = 3,035.08/x
  3. Step 3: Cross multiply
    5,130.28x = 7,078.50 × 3,035.08
  4. Step 4: Simplify right side
    5,130.28x = 21,483,813.78
  5. Step 5: Solve for x
    x = 21,483,813.78/5,130.28
  6. Step 6: Final answer
    x = 4,187.65

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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.