Home / 5,315.19-7,973.69-1,617.78

Finding the Fourth Proportional to 5,315.19, 7,973.69 and 1,617.78

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Solution

The fourth proportional to 5,315.19, 7,973.69 and 1,617.78 is: 2,426.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.19 : 7,973.69 = 1,617.78 : x
  2. Step 2: Convert to fraction form
    5,315.19/7,973.69 = 1,617.78/x
  3. Step 3: Cross multiply
    5,315.19x = 7,973.69 × 1,617.78
  4. Step 4: Simplify right side
    5,315.19x = 12,899,668.12
  5. Step 5: Solve for x
    x = 12,899,668.12/5,315.19
  6. Step 6: Final answer
    x = 2,426.94

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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.