Home / 8,012.57-11,055.33-4,990.05

Finding the Fourth Proportional to 8,012.57, 11,055.33 and 4,990.05

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Solution

The fourth proportional to 8,012.57, 11,055.33 and 4,990.05 is: 6,885.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,012.57 : 11,055.33 = 4,990.05 : x
  2. Step 2: Convert to fraction form
    8,012.57/11,055.33 = 4,990.05/x
  3. Step 3: Cross multiply
    8,012.57x = 11,055.33 × 4,990.05
  4. Step 4: Simplify right side
    8,012.57x = 55,166,649.47
  5. Step 5: Solve for x
    x = 55,166,649.47/8,012.57
  6. Step 6: Final answer
    x = 6,885.02

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Half scale
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Double 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.