Home / 2,479.02-3,420.90-1,359.76

Finding the Fourth Proportional to 2,479.02, 3,420.90 and 1,359.76

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Solution

The fourth proportional to 2,479.02, 3,420.90 and 1,359.76 is: 1,876.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.02 : 3,420.90 = 1,359.76 : x
  2. Step 2: Convert to fraction form
    2,479.02/3,420.90 = 1,359.76/x
  3. Step 3: Cross multiply
    2,479.02x = 3,420.90 × 1,359.76
  4. Step 4: Simplify right side
    2,479.02x = 4,651,602.98
  5. Step 5: Solve for x
    x = 4,651,602.98/2,479.02
  6. Step 6: Final answer
    x = 1,876.39

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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.