Home / 1,935.40-2,903.10-1,643.80

Finding the Fourth Proportional to 1,935.40, 2,903.10 and 1,643.80

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Solution

The fourth proportional to 1,935.40, 2,903.10 and 1,643.80 is: 2,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,935.40 : 2,903.10 = 1,643.80 : x
  2. Step 2: Convert to fraction form
    1,935.40/2,903.10 = 1,643.80/x
  3. Step 3: Cross multiply
    1,935.40x = 2,903.10 × 1,643.80
  4. Step 4: Simplify right side
    1,935.40x = 4,772,115.78
  5. Step 5: Solve for x
    x = 4,772,115.78/1,935.40
  6. Step 6: Final answer
    x = 2,465.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.