Home / 1,678.18-2,316-1,015.06

Finding the Fourth Proportional to 1,678.18, 2,316 and 1,015.06

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Solution

The fourth proportional to 1,678.18, 2,316 and 1,015.06 is: 1,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.18 : 2,316 = 1,015.06 : x
  2. Step 2: Convert to fraction form
    1,678.18/2,316 = 1,015.06/x
  3. Step 3: Cross multiply
    1,678.18x = 2,316 × 1,015.06
  4. Step 4: Simplify right side
    1,678.18x = 2,350,878.96
  5. Step 5: Solve for x
    x = 2,350,878.96/1,678.18
  6. Step 6: Final answer
    x = 1,400.85

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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.