Home / 2,990.48-4,485.66-1,345.86

Finding the Fourth Proportional to 2,990.48, 4,485.66 and 1,345.86

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Solution

The fourth proportional to 2,990.48, 4,485.66 and 1,345.86 is: 2,018.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.48 : 4,485.66 = 1,345.86 : x
  2. Step 2: Convert to fraction form
    2,990.48/4,485.66 = 1,345.86/x
  3. Step 3: Cross multiply
    2,990.48x = 4,485.66 × 1,345.86
  4. Step 4: Simplify right side
    2,990.48x = 6,037,070.37
  5. Step 5: Solve for x
    x = 6,037,070.37/2,990.48
  6. Step 6: Final answer
    x = 2,018.76

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