Home / 1,509.24-2,079.63-1,213.32

Finding the Fourth Proportional to 1,509.24, 2,079.63 and 1,213.32

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Solution

The fourth proportional to 1,509.24, 2,079.63 and 1,213.32 is: 1,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.24 : 2,079.63 = 1,213.32 : x
  2. Step 2: Convert to fraction form
    1,509.24/2,079.63 = 1,213.32/x
  3. Step 3: Cross multiply
    1,509.24x = 2,079.63 × 1,213.32
  4. Step 4: Simplify right side
    1,509.24x = 2,523,256.67
  5. Step 5: Solve for x
    x = 2,523,256.67/1,509.24
  6. Step 6: Final answer
    x = 1,671.87

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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.