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Finding the Fourth Proportional to 7,643.10, 10,548.10 and 4,499.90

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Solution

The fourth proportional to 7,643.10, 10,548.10 and 4,499.90 is: 6,210.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.10 : 10,548.10 = 4,499.90 : x
  2. Step 2: Convert to fraction form
    7,643.10/10,548.10 = 4,499.90/x
  3. Step 3: Cross multiply
    7,643.10x = 10,548.10 × 4,499.90
  4. Step 4: Simplify right side
    7,643.10x = 47,465,395.19
  5. Step 5: Solve for x
    x = 47,465,395.19/7,643.10
  6. Step 6: Final answer
    x = 6,210.23

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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.