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Finding the Fourth Proportional to 2,347.60, 3,235.80 and 1,683.40

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Solution

The fourth proportional to 2,347.60, 3,235.80 and 1,683.40 is: 2,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.60 : 3,235.80 = 1,683.40 : x
  2. Step 2: Convert to fraction form
    2,347.60/3,235.80 = 1,683.40/x
  3. Step 3: Cross multiply
    2,347.60x = 3,235.80 × 1,683.40
  4. Step 4: Simplify right side
    2,347.60x = 5,447,145.72
  5. Step 5: Solve for x
    x = 5,447,145.72/2,347.60
  6. Step 6: Final answer
    x = 2,320.30

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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.