Home / 5,670.69-8,490.25-4,279.81

Finding the Fourth Proportional to 5,670.69, 8,490.25 and 4,279.81

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Solution

The fourth proportional to 5,670.69, 8,490.25 and 4,279.81 is: 6,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,670.69 : 8,490.25 = 4,279.81 : x
  2. Step 2: Convert to fraction form
    5,670.69/8,490.25 = 4,279.81/x
  3. Step 3: Cross multiply
    5,670.69x = 8,490.25 × 4,279.81
  4. Step 4: Simplify right side
    5,670.69x = 36,336,656.85
  5. Step 5: Solve for x
    x = 36,336,656.85/5,670.69
  6. Step 6: Final answer
    x = 6,407.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.