Home / 1,471.08-2,029.51-947.42

Finding the Fourth Proportional to 1,471.08, 2,029.51 and 947.42

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Solution

The fourth proportional to 1,471.08, 2,029.51 and 947.42 is: 1,307.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.08 : 2,029.51 = 947.42 : x
  2. Step 2: Convert to fraction form
    1,471.08/2,029.51 = 947.42/x
  3. Step 3: Cross multiply
    1,471.08x = 2,029.51 × 947.42
  4. Step 4: Simplify right side
    1,471.08x = 1,922,788.22
  5. Step 5: Solve for x
    x = 1,922,788.22/1,471.08
  6. Step 6: Final answer
    x = 1,307.06

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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.