Home / 7,158,159-9,878,259.42-3,938,895

Finding the Fourth Proportional to 7,158,159, 9,878,259.42 and 3,938,895

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Solution

The fourth proportional to 7,158,159, 9,878,259.42 and 3,938,895 is: 5,435,675.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,159 : 9,878,259.42 = 3,938,895 : x
  2. Step 2: Convert to fraction form
    7,158,159/9,878,259.42 = 3,938,895/x
  3. Step 3: Cross multiply
    7,158,159x = 9,878,259.42 × 3,938,895
  4. Step 4: Simplify right side
    7,158,159x = 38,909,426,638,140.90
  5. Step 5: Solve for x
    x = 38,909,426,638,140.90/7,158,159
  6. Step 6: Final answer
    x = 5,435,675.10

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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.