Home / 1,539.61-2,126.67-1,245.99

Finding the Fourth Proportional to 1,539.61, 2,126.67 and 1,245.99

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Solution

The fourth proportional to 1,539.61, 2,126.67 and 1,245.99 is: 1,721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.61 : 2,126.67 = 1,245.99 : x
  2. Step 2: Convert to fraction form
    1,539.61/2,126.67 = 1,245.99/x
  3. Step 3: Cross multiply
    1,539.61x = 2,126.67 × 1,245.99
  4. Step 4: Simplify right side
    1,539.61x = 2,649,792.69
  5. Step 5: Solve for x
    x = 2,649,792.69/1,539.61
  6. Step 6: Final answer
    x = 1,721.08

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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.