Home / 2,345.42-3,235.75-2,158.92

Finding the Fourth Proportional to 2,345.42, 3,235.75 and 2,158.92

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Solution

The fourth proportional to 2,345.42, 3,235.75 and 2,158.92 is: 2,978.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.42 : 3,235.75 = 2,158.92 : x
  2. Step 2: Convert to fraction form
    2,345.42/3,235.75 = 2,158.92/x
  3. Step 3: Cross multiply
    2,345.42x = 3,235.75 × 2,158.92
  4. Step 4: Simplify right side
    2,345.42x = 6,985,719.99
  5. Step 5: Solve for x
    x = 6,985,719.99/2,345.42
  6. Step 6: Final answer
    x = 2,978.45

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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.