Home / 7,428.66-11,145.02-2,987.67

Finding the Fourth Proportional to 7,428.66, 11,145.02 and 2,987.67

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Solution

The fourth proportional to 7,428.66, 11,145.02 and 2,987.67 is: 4,482.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.66 : 11,145.02 = 2,987.67 : x
  2. Step 2: Convert to fraction form
    7,428.66/11,145.02 = 2,987.67/x
  3. Step 3: Cross multiply
    7,428.66x = 11,145.02 × 2,987.67
  4. Step 4: Simplify right side
    7,428.66x = 33,297,641.90
  5. Step 5: Solve for x
    x = 33,297,641.90/7,428.66
  6. Step 6: Final answer
    x = 4,482.32

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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.