Home / 7,275.21-10,039.86-4,131.42

Finding the Fourth Proportional to 7,275.21, 10,039.86 and 4,131.42

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Solution

The fourth proportional to 7,275.21, 10,039.86 and 4,131.42 is: 5,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.21 : 10,039.86 = 4,131.42 : x
  2. Step 2: Convert to fraction form
    7,275.21/10,039.86 = 4,131.42/x
  3. Step 3: Cross multiply
    7,275.21x = 10,039.86 × 4,131.42
  4. Step 4: Simplify right side
    7,275.21x = 41,478,878.40
  5. Step 5: Solve for x
    x = 41,478,878.40/7,275.21
  6. Step 6: Final answer
    x = 5,701.40

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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.