Home / 5,386.29-7,435.43-3,147.31

Finding the Fourth Proportional to 5,386.29, 7,435.43 and 3,147.31

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Solution

The fourth proportional to 5,386.29, 7,435.43 and 3,147.31 is: 4,344.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.29 : 7,435.43 = 3,147.31 : x
  2. Step 2: Convert to fraction form
    5,386.29/7,435.43 = 3,147.31/x
  3. Step 3: Cross multiply
    5,386.29x = 7,435.43 × 3,147.31
  4. Step 4: Simplify right side
    5,386.29x = 23,401,603.19
  5. Step 5: Solve for x
    x = 23,401,603.19/5,386.29
  6. Step 6: Final answer
    x = 4,344.66

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1.5x scale

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.