Home / 1,697.90-2,342.13-1,225.27

Finding the Fourth Proportional to 1,697.90, 2,342.13 and 1,225.27

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Solution

The fourth proportional to 1,697.90, 2,342.13 and 1,225.27 is: 1,690.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.90 : 2,342.13 = 1,225.27 : x
  2. Step 2: Convert to fraction form
    1,697.90/2,342.13 = 1,225.27/x
  3. Step 3: Cross multiply
    1,697.90x = 2,342.13 × 1,225.27
  4. Step 4: Simplify right side
    1,697.90x = 2,869,741.63
  5. Step 5: Solve for x
    x = 2,869,741.63/1,697.90
  6. Step 6: Final answer
    x = 1,690.17

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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.