Home / 8,901.79-13,356.83-3,970.91

Finding the Fourth Proportional to 8,901.79, 13,356.83 and 3,970.91

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Solution

The fourth proportional to 8,901.79, 13,356.83 and 3,970.91 is: 5,958.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.79 : 13,356.83 = 3,970.91 : x
  2. Step 2: Convert to fraction form
    8,901.79/13,356.83 = 3,970.91/x
  3. Step 3: Cross multiply
    8,901.79x = 13,356.83 × 3,970.91
  4. Step 4: Simplify right side
    8,901.79x = 53,038,813.13
  5. Step 5: Solve for x
    x = 53,038,813.13/8,901.79
  6. Step 6: Final answer
    x = 5,958.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.