Home / 7,427.69-11,142.71-2,985.35

Finding the Fourth Proportional to 7,427.69, 11,142.71 and 2,985.35

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Solution

The fourth proportional to 7,427.69, 11,142.71 and 2,985.35 is: 4,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.69 : 11,142.71 = 2,985.35 : x
  2. Step 2: Convert to fraction form
    7,427.69/11,142.71 = 2,985.35/x
  3. Step 3: Cross multiply
    7,427.69x = 11,142.71 × 2,985.35
  4. Step 4: Simplify right side
    7,427.69x = 33,264,818.66
  5. Step 5: Solve for x
    x = 33,264,818.66/7,427.69
  6. Step 6: Final answer
    x = 4,478.49

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1.5x scale

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.