Home / 3,072.08-4,239.78-1,813.52

Finding the Fourth Proportional to 3,072.08, 4,239.78 and 1,813.52

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Solution

The fourth proportional to 3,072.08, 4,239.78 and 1,813.52 is: 2,502.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.08 : 4,239.78 = 1,813.52 : x
  2. Step 2: Convert to fraction form
    3,072.08/4,239.78 = 1,813.52/x
  3. Step 3: Cross multiply
    3,072.08x = 4,239.78 × 1,813.52
  4. Step 4: Simplify right side
    3,072.08x = 7,688,925.83
  5. Step 5: Solve for x
    x = 7,688,925.83/3,072.08
  6. Step 6: Final answer
    x = 2,502.84

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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.