Home / 2,280.36-3,421.64-1,240.32

Finding the Fourth Proportional to 2,280.36, 3,421.64 and 1,240.32

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Solution

The fourth proportional to 2,280.36, 3,421.64 and 1,240.32 is: 1,861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.36 : 3,421.64 = 1,240.32 : x
  2. Step 2: Convert to fraction form
    2,280.36/3,421.64 = 1,240.32/x
  3. Step 3: Cross multiply
    2,280.36x = 3,421.64 × 1,240.32
  4. Step 4: Simplify right side
    2,280.36x = 4,243,928.52
  5. Step 5: Solve for x
    x = 4,243,928.52/2,280.36
  6. Step 6: Final answer
    x = 1,861.08

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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.