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Finding the Fourth Proportional to 7,800.56, 10,763.28 and 4,443.30

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Solution

The fourth proportional to 7,800.56, 10,763.28 and 4,443.30 is: 6,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.56 : 10,763.28 = 4,443.30 : x
  2. Step 2: Convert to fraction form
    7,800.56/10,763.28 = 4,443.30/x
  3. Step 3: Cross multiply
    7,800.56x = 10,763.28 × 4,443.30
  4. Step 4: Simplify right side
    7,800.56x = 47,824,432.90
  5. Step 5: Solve for x
    x = 47,824,432.90/7,800.56
  6. Step 6: Final answer
    x = 6,130.90

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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.