Home / 2,878.92-3,973.56-2,038.74

Finding the Fourth Proportional to 2,878.92, 3,973.56 and 2,038.74

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Solution

The fourth proportional to 2,878.92, 3,973.56 and 2,038.74 is: 2,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.92 : 3,973.56 = 2,038.74 : x
  2. Step 2: Convert to fraction form
    2,878.92/3,973.56 = 2,038.74/x
  3. Step 3: Cross multiply
    2,878.92x = 3,973.56 × 2,038.74
  4. Step 4: Simplify right side
    2,878.92x = 8,101,055.71
  5. Step 5: Solve for x
    x = 8,101,055.71/2,878.92
  6. Step 6: Final answer
    x = 2,813.92

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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.