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Finding the Fourth Proportional to 5,242.51, 7,865.12 and 1,955.63

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Solution

The fourth proportional to 5,242.51, 7,865.12 and 1,955.63 is: 2,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.51 : 7,865.12 = 1,955.63 : x
  2. Step 2: Convert to fraction form
    5,242.51/7,865.12 = 1,955.63/x
  3. Step 3: Cross multiply
    5,242.51x = 7,865.12 × 1,955.63
  4. Step 4: Simplify right side
    5,242.51x = 15,381,230.19
  5. Step 5: Solve for x
    x = 15,381,230.19/5,242.51
  6. Step 6: Final answer
    x = 2,933.95

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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.