Home / 8,320.78-11,483.36-4,785.13

Finding the Fourth Proportional to 8,320.78, 11,483.36 and 4,785.13

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Solution

The fourth proportional to 8,320.78, 11,483.36 and 4,785.13 is: 6,603.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.78 : 11,483.36 = 4,785.13 : x
  2. Step 2: Convert to fraction form
    8,320.78/11,483.36 = 4,785.13/x
  3. Step 3: Cross multiply
    8,320.78x = 11,483.36 × 4,785.13
  4. Step 4: Simplify right side
    8,320.78x = 54,949,370.44
  5. Step 5: Solve for x
    x = 54,949,370.44/8,320.78
  6. Step 6: Final answer
    x = 6,603.87

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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.