Home / 2,478.63-3,420.47-1,359.55

Finding the Fourth Proportional to 2,478.63, 3,420.47 and 1,359.55

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Solution

The fourth proportional to 2,478.63, 3,420.47 and 1,359.55 is: 1,876.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.63 : 3,420.47 = 1,359.55 : x
  2. Step 2: Convert to fraction form
    2,478.63/3,420.47 = 1,359.55/x
  3. Step 3: Cross multiply
    2,478.63x = 3,420.47 × 1,359.55
  4. Step 4: Simplify right side
    2,478.63x = 4,650,299.99
  5. Step 5: Solve for x
    x = 4,650,299.99/2,478.63
  6. Step 6: Final answer
    x = 1,876.16

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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.