Home / 1,869.18-2,580.56-1,240.56

Finding the Fourth Proportional to 1,869.18, 2,580.56 and 1,240.56

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Solution

The fourth proportional to 1,869.18, 2,580.56 and 1,240.56 is: 1,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.18 : 2,580.56 = 1,240.56 : x
  2. Step 2: Convert to fraction form
    1,869.18/2,580.56 = 1,240.56/x
  3. Step 3: Cross multiply
    1,869.18x = 2,580.56 × 1,240.56
  4. Step 4: Simplify right side
    1,869.18x = 3,201,339.51
  5. Step 5: Solve for x
    x = 3,201,339.51/1,869.18
  6. Step 6: Final answer
    x = 1,712.70

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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.