Home / 7,640.15-11,457.83-2,711.20

Finding the Fourth Proportional to 7,640.15, 11,457.83 and 2,711.20

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Solution

The fourth proportional to 7,640.15, 11,457.83 and 2,711.20 is: 4,065.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.15 : 11,457.83 = 2,711.20 : x
  2. Step 2: Convert to fraction form
    7,640.15/11,457.83 = 2,711.20/x
  3. Step 3: Cross multiply
    7,640.15x = 11,457.83 × 2,711.20
  4. Step 4: Simplify right side
    7,640.15x = 31,064,428.46
  5. Step 5: Solve for x
    x = 31,064,428.46/7,640.15
  6. Step 6: Final answer
    x = 4,065.95

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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.