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Finding the Fourth Proportional to 5,624.76, 7,762.16 and 3,140.76

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Solution

The fourth proportional to 5,624.76, 7,762.16 and 3,140.76 is: 4,334.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,624.76 : 7,762.16 = 3,140.76 : x
  2. Step 2: Convert to fraction form
    5,624.76/7,762.16 = 3,140.76/x
  3. Step 3: Cross multiply
    5,624.76x = 7,762.16 × 3,140.76
  4. Step 4: Simplify right side
    5,624.76x = 24,379,081.64
  5. Step 5: Solve for x
    x = 24,379,081.64/5,624.76
  6. Step 6: Final answer
    x = 4,334.24

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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.