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Finding the Fourth Proportional to 7,643.75, 10,549.37 and 4,499.87

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Solution

The fourth proportional to 7,643.75, 10,549.37 and 4,499.87 is: 6,210.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.75 : 10,549.37 = 4,499.87 : x
  2. Step 2: Convert to fraction form
    7,643.75/10,549.37 = 4,499.87/x
  3. Step 3: Cross multiply
    7,643.75x = 10,549.37 × 4,499.87
  4. Step 4: Simplify right side
    7,643.75x = 47,470,752.08
  5. Step 5: Solve for x
    x = 47,470,752.08/7,643.75
  6. Step 6: Final answer
    x = 6,210.40

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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.