Home / 1,503.62-2,075.61-979.46

Finding the Fourth Proportional to 1,503.62, 2,075.61 and 979.46

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Solution

The fourth proportional to 1,503.62, 2,075.61 and 979.46 is: 1,352.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.62 : 2,075.61 = 979.46 : x
  2. Step 2: Convert to fraction form
    1,503.62/2,075.61 = 979.46/x
  3. Step 3: Cross multiply
    1,503.62x = 2,075.61 × 979.46
  4. Step 4: Simplify right side
    1,503.62x = 2,032,976.97
  5. Step 5: Solve for x
    x = 2,032,976.97/1,503.62
  6. Step 6: Final answer
    x = 1,352.06

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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.