Home / 1,459.11-2,189.07-810.30

Finding the Fourth Proportional to 1,459.11, 2,189.07 and 810.30

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Solution

The fourth proportional to 1,459.11, 2,189.07 and 810.30 is: 1,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.11 : 2,189.07 = 810.30 : x
  2. Step 2: Convert to fraction form
    1,459.11/2,189.07 = 810.30/x
  3. Step 3: Cross multiply
    1,459.11x = 2,189.07 × 810.30
  4. Step 4: Simplify right side
    1,459.11x = 1,773,803.42
  5. Step 5: Solve for x
    x = 1,773,803.42/1,459.11
  6. Step 6: Final answer
    x = 1,215.67

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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.