Home / 2,478.55-3,416.77-1,888.06

Finding the Fourth Proportional to 2,478.55, 3,416.77 and 1,888.06

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Solution

The fourth proportional to 2,478.55, 3,416.77 and 1,888.06 is: 2,602.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.55 : 3,416.77 = 1,888.06 : x
  2. Step 2: Convert to fraction form
    2,478.55/3,416.77 = 1,888.06/x
  3. Step 3: Cross multiply
    2,478.55x = 3,416.77 × 1,888.06
  4. Step 4: Simplify right side
    2,478.55x = 6,451,066.77
  5. Step 5: Solve for x
    x = 6,451,066.77/2,478.55
  6. Step 6: Final answer
    x = 2,602.76

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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.