Home / 8,740.12-13,112.34-2,897.20

Finding the Fourth Proportional to 8,740.12, 13,112.34 and 2,897.20

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Solution

The fourth proportional to 8,740.12, 13,112.34 and 2,897.20 is: 4,346.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.12 : 13,112.34 = 2,897.20 : x
  2. Step 2: Convert to fraction form
    8,740.12/13,112.34 = 2,897.20/x
  3. Step 3: Cross multiply
    8,740.12x = 13,112.34 × 2,897.20
  4. Step 4: Simplify right side
    8,740.12x = 37,989,071.45
  5. Step 5: Solve for x
    x = 37,989,071.45/8,740.12
  6. Step 6: Final answer
    x = 4,346.52

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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.