Home / 3,715.55-5,130.93-2,391.56

Finding the Fourth Proportional to 3,715.55, 5,130.93 and 2,391.56

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Solution

The fourth proportional to 3,715.55, 5,130.93 and 2,391.56 is: 3,302.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.55 : 5,130.93 = 2,391.56 : x
  2. Step 2: Convert to fraction form
    3,715.55/5,130.93 = 2,391.56/x
  3. Step 3: Cross multiply
    3,715.55x = 5,130.93 × 2,391.56
  4. Step 4: Simplify right side
    3,715.55x = 12,270,889.34
  5. Step 5: Solve for x
    x = 12,270,889.34/3,715.55
  6. Step 6: Final answer
    x = 3,302.58

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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.