Home / 1,937.77-2,669.37-1,405.08

Finding the Fourth Proportional to 1,937.77, 2,669.37 and 1,405.08

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Solution

The fourth proportional to 1,937.77, 2,669.37 and 1,405.08 is: 1,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.77 : 2,669.37 = 1,405.08 : x
  2. Step 2: Convert to fraction form
    1,937.77/2,669.37 = 1,405.08/x
  3. Step 3: Cross multiply
    1,937.77x = 2,669.37 × 1,405.08
  4. Step 4: Simplify right side
    1,937.77x = 3,750,688.54
  5. Step 5: Solve for x
    x = 3,750,688.54/1,937.77
  6. Step 6: Final answer
    x = 1,935.57

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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.