Home / 2,980.32-4,108.48-1,860.76

Finding the Fourth Proportional to 2,980.32, 4,108.48 and 1,860.76

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Solution

The fourth proportional to 2,980.32, 4,108.48 and 1,860.76 is: 2,565.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.32 : 4,108.48 = 1,860.76 : x
  2. Step 2: Convert to fraction form
    2,980.32/4,108.48 = 1,860.76/x
  3. Step 3: Cross multiply
    2,980.32x = 4,108.48 × 1,860.76
  4. Step 4: Simplify right side
    2,980.32x = 7,644,895.24
  5. Step 5: Solve for x
    x = 7,644,895.24/2,980.32
  6. Step 6: Final answer
    x = 2,565.13

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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.