Home / 5,153.49-7,111.76-2,915.79

Finding the Fourth Proportional to 5,153.49, 7,111.76 and 2,915.79

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Solution

The fourth proportional to 5,153.49, 7,111.76 and 2,915.79 is: 4,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.49 : 7,111.76 = 2,915.79 : x
  2. Step 2: Convert to fraction form
    5,153.49/7,111.76 = 2,915.79/x
  3. Step 3: Cross multiply
    5,153.49x = 7,111.76 × 2,915.79
  4. Step 4: Simplify right side
    5,153.49x = 20,736,384.11
  5. Step 5: Solve for x
    x = 20,736,384.11/5,153.49
  6. Step 6: Final answer
    x = 4,023.76

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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.