Home / 8,637.72-11,919.60-4,911.72

Finding the Fourth Proportional to 8,637.72, 11,919.60 and 4,911.72

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Solution

The fourth proportional to 8,637.72, 11,919.60 and 4,911.72 is: 6,777.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.72 : 11,919.60 = 4,911.72 : x
  2. Step 2: Convert to fraction form
    8,637.72/11,919.60 = 4,911.72/x
  3. Step 3: Cross multiply
    8,637.72x = 11,919.60 × 4,911.72
  4. Step 4: Simplify right side
    8,637.72x = 58,545,737.71
  5. Step 5: Solve for x
    x = 58,545,737.71/8,637.72
  6. Step 6: Final answer
    x = 6,777.92

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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.