Home / 5,315.49-7,335.50-2,957.78

Finding the Fourth Proportional to 5,315.49, 7,335.50 and 2,957.78

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Solution

The fourth proportional to 5,315.49, 7,335.50 and 2,957.78 is: 4,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.49 : 7,335.50 = 2,957.78 : x
  2. Step 2: Convert to fraction form
    5,315.49/7,335.50 = 2,957.78/x
  3. Step 3: Cross multiply
    5,315.49x = 7,335.50 × 2,957.78
  4. Step 4: Simplify right side
    5,315.49x = 21,696,798.74
  5. Step 5: Solve for x
    x = 21,696,798.74/5,315.49
  6. Step 6: Final answer
    x = 4,081.81

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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.