Home / 7,145.10-9,859.47-4,791.66

Finding the Fourth Proportional to 7,145.10, 9,859.47 and 4,791.66

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Solution

The fourth proportional to 7,145.10, 9,859.47 and 4,791.66 is: 6,611.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.10 : 9,859.47 = 4,791.66 : x
  2. Step 2: Convert to fraction form
    7,145.10/9,859.47 = 4,791.66/x
  3. Step 3: Cross multiply
    7,145.10x = 9,859.47 × 4,791.66
  4. Step 4: Simplify right side
    7,145.10x = 47,243,228.02
  5. Step 5: Solve for x
    x = 47,243,228.02/7,145.10
  6. Step 6: Final answer
    x = 6,611.98

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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.