Home / 2,476.36-3,417.78-1,428.76

Finding the Fourth Proportional to 2,476.36, 3,417.78 and 1,428.76

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Solution

The fourth proportional to 2,476.36, 3,417.78 and 1,428.76 is: 1,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,476.36 : 3,417.78 = 1,428.76 : x
  2. Step 2: Convert to fraction form
    2,476.36/3,417.78 = 1,428.76/x
  3. Step 3: Cross multiply
    2,476.36x = 3,417.78 × 1,428.76
  4. Step 4: Simplify right side
    2,476.36x = 4,883,187.35
  5. Step 5: Solve for x
    x = 4,883,187.35/2,476.36
  6. Step 6: Final answer
    x = 1,971.92

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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.