Home / 1,864.40-2,572.70-1,078.29

Finding the Fourth Proportional to 1,864.40, 2,572.70 and 1,078.29

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Solution

The fourth proportional to 1,864.40, 2,572.70 and 1,078.29 is: 1,487.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.40 : 2,572.70 = 1,078.29 : x
  2. Step 2: Convert to fraction form
    1,864.40/2,572.70 = 1,078.29/x
  3. Step 3: Cross multiply
    1,864.40x = 2,572.70 × 1,078.29
  4. Step 4: Simplify right side
    1,864.40x = 2,774,111.29
  5. Step 5: Solve for x
    x = 2,774,111.29/1,864.40
  6. Step 6: Final answer
    x = 1,487.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.