Home / 6,385.20-8,811.36-3,590.16

Finding the Fourth Proportional to 6,385.20, 8,811.36 and 3,590.16

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Solution

The fourth proportional to 6,385.20, 8,811.36 and 3,590.16 is: 4,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.20 : 8,811.36 = 3,590.16 : x
  2. Step 2: Convert to fraction form
    6,385.20/8,811.36 = 3,590.16/x
  3. Step 3: Cross multiply
    6,385.20x = 8,811.36 × 3,590.16
  4. Step 4: Simplify right side
    6,385.20x = 31,634,192.22
  5. Step 5: Solve for x
    x = 31,634,192.22/6,385.20
  6. Step 6: Final answer
    x = 4,954.30

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Half scale
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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.