Home / 7,158,071-9,878,138.04-3,938,807

Finding the Fourth Proportional to 7,158,071, 9,878,138.04 and 3,938,807

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Solution

The fourth proportional to 7,158,071, 9,878,138.04 and 3,938,807 is: 5,435,553.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,071 : 9,878,138.04 = 3,938,807 : x
  2. Step 2: Convert to fraction form
    7,158,071/9,878,138.04 = 3,938,807/x
  3. Step 3: Cross multiply
    7,158,071x = 9,878,138.04 × 3,938,807
  4. Step 4: Simplify right side
    7,158,071x = 38,908,079,258,918.27
  5. Step 5: Solve for x
    x = 38,908,079,258,918.27/7,158,071
  6. Step 6: Final answer
    x = 5,435,553.69

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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.