Home / 7,421.61-11,130.66-2,155.23

Finding the Fourth Proportional to 7,421.61, 11,130.66 and 2,155.23

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Solution

The fourth proportional to 7,421.61, 11,130.66 and 2,155.23 is: 3,232.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.61 : 11,130.66 = 2,155.23 : x
  2. Step 2: Convert to fraction form
    7,421.61/11,130.66 = 2,155.23/x
  3. Step 3: Cross multiply
    7,421.61x = 11,130.66 × 2,155.23
  4. Step 4: Simplify right side
    7,421.61x = 23,989,132.35
  5. Step 5: Solve for x
    x = 23,989,132.35/7,421.61
  6. Step 6: Final answer
    x = 3,232.34

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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.