Home / 5,259.47-7,890.57-1,561.68

Finding the Fourth Proportional to 5,259.47, 7,890.57 and 1,561.68

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Solution

The fourth proportional to 5,259.47, 7,890.57 and 1,561.68 is: 2,342.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,259.47 : 7,890.57 = 1,561.68 : x
  2. Step 2: Convert to fraction form
    5,259.47/7,890.57 = 1,561.68/x
  3. Step 3: Cross multiply
    5,259.47x = 7,890.57 × 1,561.68
  4. Step 4: Simplify right side
    5,259.47x = 12,322,545.36
  5. Step 5: Solve for x
    x = 12,322,545.36/5,259.47
  6. Step 6: Final answer
    x = 2,342.93

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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.