Home / 6,156.80-8,486.56-5,648.32

Finding the Fourth Proportional to 6,156.80, 8,486.56 and 5,648.32

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Solution

The fourth proportional to 6,156.80, 8,486.56 and 5,648.32 is: 7,785.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,156.80 : 8,486.56 = 5,648.32 : x
  2. Step 2: Convert to fraction form
    6,156.80/8,486.56 = 5,648.32/x
  3. Step 3: Cross multiply
    6,156.80x = 8,486.56 × 5,648.32
  4. Step 4: Simplify right side
    6,156.80x = 47,934,806.58
  5. Step 5: Solve for x
    x = 47,934,806.58/6,156.80
  6. Step 6: Final answer
    x = 7,785.67

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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.