Home / 2,295.20-3,439.20-1,985.60

Finding the Fourth Proportional to 2,295.20, 3,439.20 and 1,985.60

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Solution

The fourth proportional to 2,295.20, 3,439.20 and 1,985.60 is: 2,975.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,295.20 : 3,439.20 = 1,985.60 : x
  2. Step 2: Convert to fraction form
    2,295.20/3,439.20 = 1,985.60/x
  3. Step 3: Cross multiply
    2,295.20x = 3,439.20 × 1,985.60
  4. Step 4: Simplify right side
    2,295.20x = 6,828,875.52
  5. Step 5: Solve for x
    x = 6,828,875.52/2,295.20
  6. Step 6: Final answer
    x = 2,975.29

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1.5x scale

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.