Home / 2,475.78-3,415.65-1,427.46

Finding the Fourth Proportional to 2,475.78, 3,415.65 and 1,427.46

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Solution

The fourth proportional to 2,475.78, 3,415.65 and 1,427.46 is: 1,969.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.78 : 3,415.65 = 1,427.46 : x
  2. Step 2: Convert to fraction form
    2,475.78/3,415.65 = 1,427.46/x
  3. Step 3: Cross multiply
    2,475.78x = 3,415.65 × 1,427.46
  4. Step 4: Simplify right side
    2,475.78x = 4,875,703.75
  5. Step 5: Solve for x
    x = 4,875,703.75/2,475.78
  6. Step 6: Final answer
    x = 1,969.36

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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.