Home / 2,421.48-3,343.14-2,172.36

Finding the Fourth Proportional to 2,421.48, 3,343.14 and 2,172.36

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Solution

The fourth proportional to 2,421.48, 3,343.14 and 2,172.36 is: 2,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.48 : 3,343.14 = 2,172.36 : x
  2. Step 2: Convert to fraction form
    2,421.48/3,343.14 = 2,172.36/x
  3. Step 3: Cross multiply
    2,421.48x = 3,343.14 × 2,172.36
  4. Step 4: Simplify right side
    2,421.48x = 7,262,503.61
  5. Step 5: Solve for x
    x = 7,262,503.61/2,421.48
  6. Step 6: Final answer
    x = 2,999.20

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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.