Home / 8,130.52-11,220.02-4,942.76

Finding the Fourth Proportional to 8,130.52, 11,220.02 and 4,942.76

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Solution

The fourth proportional to 8,130.52, 11,220.02 and 4,942.76 is: 6,820.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.52 : 11,220.02 = 4,942.76 : x
  2. Step 2: Convert to fraction form
    8,130.52/11,220.02 = 4,942.76/x
  3. Step 3: Cross multiply
    8,130.52x = 11,220.02 × 4,942.76
  4. Step 4: Simplify right side
    8,130.52x = 55,457,866.06
  5. Step 5: Solve for x
    x = 55,457,866.06/8,130.52
  6. Step 6: Final answer
    x = 6,820.95

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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.