Home / 3,051.36-4,210.08-1,931.76

Finding the Fourth Proportional to 3,051.36, 4,210.08 and 1,931.76

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Solution

The fourth proportional to 3,051.36, 4,210.08 and 1,931.76 is: 2,665.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.36 : 4,210.08 = 1,931.76 : x
  2. Step 2: Convert to fraction form
    3,051.36/4,210.08 = 1,931.76/x
  3. Step 3: Cross multiply
    3,051.36x = 4,210.08 × 1,931.76
  4. Step 4: Simplify right side
    3,051.36x = 8,132,864.14
  5. Step 5: Solve for x
    x = 8,132,864.14/3,051.36
  6. Step 6: Final answer
    x = 2,665.32

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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.