Home / 2,485.63-3,430.77-1,646.38

Finding the Fourth Proportional to 2,485.63, 3,430.77 and 1,646.38

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Solution

The fourth proportional to 2,485.63, 3,430.77 and 1,646.38 is: 2,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.63 : 3,430.77 = 1,646.38 : x
  2. Step 2: Convert to fraction form
    2,485.63/3,430.77 = 1,646.38/x
  3. Step 3: Cross multiply
    2,485.63x = 3,430.77 × 1,646.38
  4. Step 4: Simplify right side
    2,485.63x = 5,648,351.11
  5. Step 5: Solve for x
    x = 5,648,351.11/2,485.63
  6. Step 6: Final answer
    x = 2,272.40

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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.