Home / 8,880.40-13,320.14-2,640.47

Finding the Fourth Proportional to 8,880.40, 13,320.14 and 2,640.47

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Solution

The fourth proportional to 8,880.40, 13,320.14 and 2,640.47 is: 3,960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.40 : 13,320.14 = 2,640.47 : x
  2. Step 2: Convert to fraction form
    8,880.40/13,320.14 = 2,640.47/x
  3. Step 3: Cross multiply
    8,880.40x = 13,320.14 × 2,640.47
  4. Step 4: Simplify right side
    8,880.40x = 35,171,430.07
  5. Step 5: Solve for x
    x = 35,171,430.07/8,880.40
  6. Step 6: Final answer
    x = 3,960.57

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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.