Home / 2,121.48-3,182.76-1,509.12

Finding the Fourth Proportional to 2,121.48, 3,182.76 and 1,509.12

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Solution

The fourth proportional to 2,121.48, 3,182.76 and 1,509.12 is: 2,264.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.48 : 3,182.76 = 1,509.12 : x
  2. Step 2: Convert to fraction form
    2,121.48/3,182.76 = 1,509.12/x
  3. Step 3: Cross multiply
    2,121.48x = 3,182.76 × 1,509.12
  4. Step 4: Simplify right side
    2,121.48x = 4,803,166.77
  5. Step 5: Solve for x
    x = 4,803,166.77/2,121.48
  6. Step 6: Final answer
    x = 2,264.06

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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.