Home / 1,528.29-2,289.87-748.67

Finding the Fourth Proportional to 1,528.29, 2,289.87 and 748.67

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Solution

The fourth proportional to 1,528.29, 2,289.87 and 748.67 is: 1,121.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.29 : 2,289.87 = 748.67 : x
  2. Step 2: Convert to fraction form
    1,528.29/2,289.87 = 748.67/x
  3. Step 3: Cross multiply
    1,528.29x = 2,289.87 × 748.67
  4. Step 4: Simplify right side
    1,528.29x = 1,714,345.52
  5. Step 5: Solve for x
    x = 1,714,345.52/1,528.29
  6. Step 6: Final answer
    x = 1,121.74

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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.