Home / 2,478.08-3,419.61-1,358.80

Finding the Fourth Proportional to 2,478.08, 3,419.61 and 1,358.80

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Solution

The fourth proportional to 2,478.08, 3,419.61 and 1,358.80 is: 1,875.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.08 : 3,419.61 = 1,358.80 : x
  2. Step 2: Convert to fraction form
    2,478.08/3,419.61 = 1,358.80/x
  3. Step 3: Cross multiply
    2,478.08x = 3,419.61 × 1,358.80
  4. Step 4: Simplify right side
    2,478.08x = 4,646,566.07
  5. Step 5: Solve for x
    x = 4,646,566.07/2,478.08
  6. Step 6: Final answer
    x = 1,875.07

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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.