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Finding the Fourth Proportional to 5,315.81, 7,335.81 and 2,925.90

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Solution

The fourth proportional to 5,315.81, 7,335.81 and 2,925.90 is: 4,037.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.81 : 7,335.81 = 2,925.90 : x
  2. Step 2: Convert to fraction form
    5,315.81/7,335.81 = 2,925.90/x
  3. Step 3: Cross multiply
    5,315.81x = 7,335.81 × 2,925.90
  4. Step 4: Simplify right side
    5,315.81x = 21,463,846.48
  5. Step 5: Solve for x
    x = 21,463,846.48/5,315.81
  6. Step 6: Final answer
    x = 4,037.74

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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.