Home / 7,637.90-11,461.60-3,421.14

Finding the Fourth Proportional to 7,637.90, 11,461.60 and 3,421.14

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Solution

The fourth proportional to 7,637.90, 11,461.60 and 3,421.14 is: 5,133.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,637.90 : 11,461.60 = 3,421.14 : x
  2. Step 2: Convert to fraction form
    7,637.90/11,461.60 = 3,421.14/x
  3. Step 3: Cross multiply
    7,637.90x = 11,461.60 × 3,421.14
  4. Step 4: Simplify right side
    7,637.90x = 39,211,699.52
  5. Step 5: Solve for x
    x = 39,211,699.52/7,637.90
  6. Step 6: Final answer
    x = 5,133.84

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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.