Home / 7,440.40-11,075.60-7,329.68

Finding the Fourth Proportional to 7,440.40, 11,075.60 and 7,329.68

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Solution

The fourth proportional to 7,440.40, 11,075.60 and 7,329.68 is: 10,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,440.40 : 11,075.60 = 7,329.68 : x
  2. Step 2: Convert to fraction form
    7,440.40/11,075.60 = 7,329.68/x
  3. Step 3: Cross multiply
    7,440.40x = 11,075.60 × 7,329.68
  4. Step 4: Simplify right side
    7,440.40x = 81,180,603.81
  5. Step 5: Solve for x
    x = 81,180,603.81/7,440.40
  6. Step 6: Final answer
    x = 10,910.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.