Home / 6,117.84-8,438.24-5,615.32

Finding the Fourth Proportional to 6,117.84, 8,438.24 and 5,615.32

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Solution

The fourth proportional to 6,117.84, 8,438.24 and 5,615.32 is: 7,745.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,117.84 : 8,438.24 = 5,615.32 : x
  2. Step 2: Convert to fraction form
    6,117.84/8,438.24 = 5,615.32/x
  3. Step 3: Cross multiply
    6,117.84x = 8,438.24 × 5,615.32
  4. Step 4: Simplify right side
    6,117.84x = 47,383,417.84
  5. Step 5: Solve for x
    x = 47,383,417.84/6,117.84
  6. Step 6: Final answer
    x = 7,745.12

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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.