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Finding the Fourth Proportional to 2,931.75, 4,398.74 and 1,893.74

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Solution

The fourth proportional to 2,931.75, 4,398.74 and 1,893.74 is: 2,841.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.75 : 4,398.74 = 1,893.74 : x
  2. Step 2: Convert to fraction form
    2,931.75/4,398.74 = 1,893.74/x
  3. Step 3: Cross multiply
    2,931.75x = 4,398.74 × 1,893.74
  4. Step 4: Simplify right side
    2,931.75x = 8,330,038.43
  5. Step 5: Solve for x
    x = 8,330,038.43/2,931.75
  6. Step 6: Final answer
    x = 2,841.32

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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.