Home / 7,350.47-10,139.25-6,858.40

Finding the Fourth Proportional to 7,350.47, 10,139.25 and 6,858.40

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Solution

The fourth proportional to 7,350.47, 10,139.25 and 6,858.40 is: 9,460.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,350.47 : 10,139.25 = 6,858.40 : x
  2. Step 2: Convert to fraction form
    7,350.47/10,139.25 = 6,858.40/x
  3. Step 3: Cross multiply
    7,350.47x = 10,139.25 × 6,858.40
  4. Step 4: Simplify right side
    7,350.47x = 69,539,006.85
  5. Step 5: Solve for x
    x = 69,539,006.85/7,350.47
  6. Step 6: Final answer
    x = 9,460.48

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1.5x scale

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.