Home / 2,928.49-4,042.70-1,810.08

Finding the Fourth Proportional to 2,928.49, 4,042.70 and 1,810.08

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Solution

The fourth proportional to 2,928.49, 4,042.70 and 1,810.08 is: 2,498.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.49 : 4,042.70 = 1,810.08 : x
  2. Step 2: Convert to fraction form
    2,928.49/4,042.70 = 1,810.08/x
  3. Step 3: Cross multiply
    2,928.49x = 4,042.70 × 1,810.08
  4. Step 4: Simplify right side
    2,928.49x = 7,317,614.94
  5. Step 5: Solve for x
    x = 7,317,614.94/2,928.49
  6. Step 6: Final answer
    x = 2,498.77

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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.