Home / 8,940.36-13,378.32-5,417.40

Finding the Fourth Proportional to 8,940.36, 13,378.32 and 5,417.40

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Solution

The fourth proportional to 8,940.36, 13,378.32 and 5,417.40 is: 8,106.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.36 : 13,378.32 = 5,417.40 : x
  2. Step 2: Convert to fraction form
    8,940.36/13,378.32 = 5,417.40/x
  3. Step 3: Cross multiply
    8,940.36x = 13,378.32 × 5,417.40
  4. Step 4: Simplify right side
    8,940.36x = 72,475,710.77
  5. Step 5: Solve for x
    x = 72,475,710.77/8,940.36
  6. Step 6: Final answer
    x = 8,106.58

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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.