Home / 1,803.18-2,705.40-938.10

Finding the Fourth Proportional to 1,803.18, 2,705.40 and 938.10

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Solution

The fourth proportional to 1,803.18, 2,705.40 and 938.10 is: 1,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.18 : 2,705.40 = 938.10 : x
  2. Step 2: Convert to fraction form
    1,803.18/2,705.40 = 938.10/x
  3. Step 3: Cross multiply
    1,803.18x = 2,705.40 × 938.10
  4. Step 4: Simplify right side
    1,803.18x = 2,537,935.74
  5. Step 5: Solve for x
    x = 2,537,935.74/1,803.18
  6. Step 6: Final answer
    x = 1,407.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.