Home / 5,312.72-7,316.64-5,197.92

Finding the Fourth Proportional to 5,312.72, 7,316.64 and 5,197.92

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Solution

The fourth proportional to 5,312.72, 7,316.64 and 5,197.92 is: 7,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.72 : 7,316.64 = 5,197.92 : x
  2. Step 2: Convert to fraction form
    5,312.72/7,316.64 = 5,197.92/x
  3. Step 3: Cross multiply
    5,312.72x = 7,316.64 × 5,197.92
  4. Step 4: Simplify right side
    5,312.72x = 38,031,309.39
  5. Step 5: Solve for x
    x = 38,031,309.39/5,312.72
  6. Step 6: Final answer
    x = 7,158.54

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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.