Home / 2,117.63-3,176.39-947.36

Finding the Fourth Proportional to 2,117.63, 3,176.39 and 947.36

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Solution

The fourth proportional to 2,117.63, 3,176.39 and 947.36 is: 1,421.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.63 : 3,176.39 = 947.36 : x
  2. Step 2: Convert to fraction form
    2,117.63/3,176.39 = 947.36/x
  3. Step 3: Cross multiply
    2,117.63x = 3,176.39 × 947.36
  4. Step 4: Simplify right side
    2,117.63x = 3,009,171.32
  5. Step 5: Solve for x
    x = 3,009,171.32/2,117.63
  6. Step 6: Final answer
    x = 1,421.01

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1.5x scale

Why These Related Problems?

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