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Finding the Fourth Proportional to 3,315.65, 4,973.69 and 975.61

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Solution

The fourth proportional to 3,315.65, 4,973.69 and 975.61 is: 1,463.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.65 : 4,973.69 = 975.61 : x
  2. Step 2: Convert to fraction form
    3,315.65/4,973.69 = 975.61/x
  3. Step 3: Cross multiply
    3,315.65x = 4,973.69 × 975.61
  4. Step 4: Simplify right side
    3,315.65x = 4,852,384.87
  5. Step 5: Solve for x
    x = 4,852,384.87/3,315.65
  6. Step 6: Final answer
    x = 1,463.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.