Home / 3,648.12-5,036.76-2,807.28

Finding the Fourth Proportional to 3,648.12, 5,036.76 and 2,807.28

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Solution

The fourth proportional to 3,648.12, 5,036.76 and 2,807.28 is: 3,875.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,648.12 : 5,036.76 = 2,807.28 : x
  2. Step 2: Convert to fraction form
    3,648.12/5,036.76 = 2,807.28/x
  3. Step 3: Cross multiply
    3,648.12x = 5,036.76 × 2,807.28
  4. Step 4: Simplify right side
    3,648.12x = 14,139,595.61
  5. Step 5: Solve for x
    x = 14,139,595.61/3,648.12
  6. Step 6: Final answer
    x = 3,875.86

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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.