Home / 4,931.78-6,805.24-2,807.58

Finding the Fourth Proportional to 4,931.78, 6,805.24 and 2,807.58

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Solution

The fourth proportional to 4,931.78, 6,805.24 and 2,807.58 is: 3,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931.78 : 6,805.24 = 2,807.58 : x
  2. Step 2: Convert to fraction form
    4,931.78/6,805.24 = 2,807.58/x
  3. Step 3: Cross multiply
    4,931.78x = 6,805.24 × 2,807.58
  4. Step 4: Simplify right side
    4,931.78x = 19,106,248.70
  5. Step 5: Solve for x
    x = 19,106,248.70/4,931.78
  6. Step 6: Final answer
    x = 3,874.11

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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.