Home / 7,971.21-10,988.75-5,277.91

Finding the Fourth Proportional to 7,971.21, 10,988.75 and 5,277.91

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Solution

The fourth proportional to 7,971.21, 10,988.75 and 5,277.91 is: 7,275.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.21 : 10,988.75 = 5,277.91 : x
  2. Step 2: Convert to fraction form
    7,971.21/10,988.75 = 5,277.91/x
  3. Step 3: Cross multiply
    7,971.21x = 10,988.75 × 5,277.91
  4. Step 4: Simplify right side
    7,971.21x = 57,997,647.79
  5. Step 5: Solve for x
    x = 57,997,647.79/7,971.21
  6. Step 6: Final answer
    x = 7,275.89

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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.