Home / 1,677.28-2,313.48-1,547.68

Finding the Fourth Proportional to 1,677.28, 2,313.48 and 1,547.68

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Solution

The fourth proportional to 1,677.28, 2,313.48 and 1,547.68 is: 2,134.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.28 : 2,313.48 = 1,547.68 : x
  2. Step 2: Convert to fraction form
    1,677.28/2,313.48 = 1,547.68/x
  3. Step 3: Cross multiply
    1,677.28x = 2,313.48 × 1,547.68
  4. Step 4: Simplify right side
    1,677.28x = 3,580,526.73
  5. Step 5: Solve for x
    x = 3,580,526.73/1,677.28
  6. Step 6: Final answer
    x = 2,134.72

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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.