Home / 2,970.08-4,455.12-1,672.80

Finding the Fourth Proportional to 2,970.08, 4,455.12 and 1,672.80

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Solution

The fourth proportional to 2,970.08, 4,455.12 and 1,672.80 is: 2,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.08 : 4,455.12 = 1,672.80 : x
  2. Step 2: Convert to fraction form
    2,970.08/4,455.12 = 1,672.80/x
  3. Step 3: Cross multiply
    2,970.08x = 4,455.12 × 1,672.80
  4. Step 4: Simplify right side
    2,970.08x = 7,452,524.74
  5. Step 5: Solve for x
    x = 7,452,524.74/2,970.08
  6. Step 6: Final answer
    x = 2,509.20

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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.