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Finding the Fourth Proportional to 7,800.57, 11,702.91 and 2,803.45

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Solution

The fourth proportional to 7,800.57, 11,702.91 and 2,803.45 is: 4,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.57 : 11,702.91 = 2,803.45 : x
  2. Step 2: Convert to fraction form
    7,800.57/11,702.91 = 2,803.45/x
  3. Step 3: Cross multiply
    7,800.57x = 11,702.91 × 2,803.45
  4. Step 4: Simplify right side
    7,800.57x = 32,808,523.04
  5. Step 5: Solve for x
    x = 32,808,523.04/7,800.57
  6. Step 6: Final answer
    x = 4,205.91

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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.