Home / 8,685.45-11,985.21-4,908.94

Finding the Fourth Proportional to 8,685.45, 11,985.21 and 4,908.94

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Solution

The fourth proportional to 8,685.45, 11,985.21 and 4,908.94 is: 6,773.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.45 : 11,985.21 = 4,908.94 : x
  2. Step 2: Convert to fraction form
    8,685.45/11,985.21 = 4,908.94/x
  3. Step 3: Cross multiply
    8,685.45x = 11,985.21 × 4,908.94
  4. Step 4: Simplify right side
    8,685.45x = 58,834,646.81
  5. Step 5: Solve for x
    x = 58,834,646.81/8,685.45
  6. Step 6: Final answer
    x = 6,773.93

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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.