Home / 1,683.16-2,320.68-1,383.35

Finding the Fourth Proportional to 1,683.16, 2,320.68 and 1,383.35

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Solution

The fourth proportional to 1,683.16, 2,320.68 and 1,383.35 is: 1,907.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.16 : 2,320.68 = 1,383.35 : x
  2. Step 2: Convert to fraction form
    1,683.16/2,320.68 = 1,383.35/x
  3. Step 3: Cross multiply
    1,683.16x = 2,320.68 × 1,383.35
  4. Step 4: Simplify right side
    1,683.16x = 3,210,312.68
  5. Step 5: Solve for x
    x = 3,210,312.68/1,683.16
  6. Step 6: Final answer
    x = 1,907.31

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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.