Home / 1,688.42-2,518.19-1,629.64

Finding the Fourth Proportional to 1,688.42, 2,518.19 and 1,629.64

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Solution

The fourth proportional to 1,688.42, 2,518.19 and 1,629.64 is: 2,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.42 : 2,518.19 = 1,629.64 : x
  2. Step 2: Convert to fraction form
    1,688.42/2,518.19 = 1,629.64/x
  3. Step 3: Cross multiply
    1,688.42x = 2,518.19 × 1,629.64
  4. Step 4: Simplify right side
    1,688.42x = 4,103,751.34
  5. Step 5: Solve for x
    x = 4,103,751.34/1,688.42
  6. Step 6: Final answer
    x = 2,430.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.