Home / 2,475.78-3,699.18-2,389.68

Finding the Fourth Proportional to 2,475.78, 3,699.18 and 2,389.68

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Solution

The fourth proportional to 2,475.78, 3,699.18 and 2,389.68 is: 3,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.78 : 3,699.18 = 2,389.68 : x
  2. Step 2: Convert to fraction form
    2,475.78/3,699.18 = 2,389.68/x
  3. Step 3: Cross multiply
    2,475.78x = 3,699.18 × 2,389.68
  4. Step 4: Simplify right side
    2,475.78x = 8,839,856.46
  5. Step 5: Solve for x
    x = 8,839,856.46/2,475.78
  6. Step 6: Final answer
    x = 3,570.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.