Home / 7,419.90-11,128.98-1,873.24

Finding the Fourth Proportional to 7,419.90, 11,128.98 and 1,873.24

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Solution

The fourth proportional to 7,419.90, 11,128.98 and 1,873.24 is: 2,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.90 : 11,128.98 = 1,873.24 : x
  2. Step 2: Convert to fraction form
    7,419.90/11,128.98 = 1,873.24/x
  3. Step 3: Cross multiply
    7,419.90x = 11,128.98 × 1,873.24
  4. Step 4: Simplify right side
    7,419.90x = 20,847,250.50
  5. Step 5: Solve for x
    x = 20,847,250.50/7,419.90
  6. Step 6: Final answer
    x = 2,809.64

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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.