Home / 7,740.86-11,611.28-1,897.41

Finding the Fourth Proportional to 7,740.86, 11,611.28 and 1,897.41

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Solution

The fourth proportional to 7,740.86, 11,611.28 and 1,897.41 is: 2,846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.86 : 11,611.28 = 1,897.41 : x
  2. Step 2: Convert to fraction form
    7,740.86/11,611.28 = 1,897.41/x
  3. Step 3: Cross multiply
    7,740.86x = 11,611.28 × 1,897.41
  4. Step 4: Simplify right side
    7,740.86x = 22,031,349.30
  5. Step 5: Solve for x
    x = 22,031,349.30/7,740.86
  6. Step 6: Final answer
    x = 2,846.11

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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.