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Finding the Fourth Proportional to 1,698.57, 2,343.47 and 1,035.18

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Solution

The fourth proportional to 1,698.57, 2,343.47 and 1,035.18 is: 1,428.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.57 : 2,343.47 = 1,035.18 : x
  2. Step 2: Convert to fraction form
    1,698.57/2,343.47 = 1,035.18/x
  3. Step 3: Cross multiply
    1,698.57x = 2,343.47 × 1,035.18
  4. Step 4: Simplify right side
    1,698.57x = 2,425,908.10
  5. Step 5: Solve for x
    x = 2,425,908.10/1,698.57
  6. Step 6: Final answer
    x = 1,428.21

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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.