Home / 8,315.10-11,475.27-4,778.64

Finding the Fourth Proportional to 8,315.10, 11,475.27 and 4,778.64

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Solution

The fourth proportional to 8,315.10, 11,475.27 and 4,778.64 is: 6,594.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.10 : 11,475.27 = 4,778.64 : x
  2. Step 2: Convert to fraction form
    8,315.10/11,475.27 = 4,778.64/x
  3. Step 3: Cross multiply
    8,315.10x = 11,475.27 × 4,778.64
  4. Step 4: Simplify right side
    8,315.10x = 54,836,184.23
  5. Step 5: Solve for x
    x = 54,836,184.23/8,315.10
  6. Step 6: Final answer
    x = 6,594.77

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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.