Home / 7,132.40-10,698.64-1,938.28

Finding the Fourth Proportional to 7,132.40, 10,698.64 and 1,938.28

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Solution

The fourth proportional to 7,132.40, 10,698.64 and 1,938.28 is: 2,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.40 : 10,698.64 = 1,938.28 : x
  2. Step 2: Convert to fraction form
    7,132.40/10,698.64 = 1,938.28/x
  3. Step 3: Cross multiply
    7,132.40x = 10,698.64 × 1,938.28
  4. Step 4: Simplify right side
    7,132.40x = 20,736,959.94
  5. Step 5: Solve for x
    x = 20,736,959.94/7,132.40
  6. Step 6: Final answer
    x = 2,907.43

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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.