Home / 2,478.48-3,420.04-1,359.36

Finding the Fourth Proportional to 2,478.48, 3,420.04 and 1,359.36

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Solution

The fourth proportional to 2,478.48, 3,420.04 and 1,359.36 is: 1,875.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.48 : 3,420.04 = 1,359.36 : x
  2. Step 2: Convert to fraction form
    2,478.48/3,420.04 = 1,359.36/x
  3. Step 3: Cross multiply
    2,478.48x = 3,420.04 × 1,359.36
  4. Step 4: Simplify right side
    2,478.48x = 4,649,065.57
  5. Step 5: Solve for x
    x = 4,649,065.57/2,478.48
  6. Step 6: Final answer
    x = 1,875.77

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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.