Home / 1,575.20-2,173.90-1,043.18

Finding the Fourth Proportional to 1,575.20, 2,173.90 and 1,043.18

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Solution

The fourth proportional to 1,575.20, 2,173.90 and 1,043.18 is: 1,439.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.20 : 2,173.90 = 1,043.18 : x
  2. Step 2: Convert to fraction form
    1,575.20/2,173.90 = 1,043.18/x
  3. Step 3: Cross multiply
    1,575.20x = 2,173.90 × 1,043.18
  4. Step 4: Simplify right side
    1,575.20x = 2,267,769.00
  5. Step 5: Solve for x
    x = 2,267,769.00/1,575.20
  6. Step 6: Final answer
    x = 1,439.67

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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.