Home / 1,669.84-2,303.61-1,080.57

Finding the Fourth Proportional to 1,669.84, 2,303.61 and 1,080.57

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Solution

The fourth proportional to 1,669.84, 2,303.61 and 1,080.57 is: 1,490.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.84 : 2,303.61 = 1,080.57 : x
  2. Step 2: Convert to fraction form
    1,669.84/2,303.61 = 1,080.57/x
  3. Step 3: Cross multiply
    1,669.84x = 2,303.61 × 1,080.57
  4. Step 4: Simplify right side
    1,669.84x = 2,489,211.86
  5. Step 5: Solve for x
    x = 2,489,211.86/1,669.84
  6. Step 6: Final answer
    x = 1,490.69

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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.