Home / 1,478.66-2,041.20-948.11

Finding the Fourth Proportional to 1,478.66, 2,041.20 and 948.11

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Solution

The fourth proportional to 1,478.66, 2,041.20 and 948.11 is: 1,308.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.66 : 2,041.20 = 948.11 : x
  2. Step 2: Convert to fraction form
    1,478.66/2,041.20 = 948.11/x
  3. Step 3: Cross multiply
    1,478.66x = 2,041.20 × 948.11
  4. Step 4: Simplify right side
    1,478.66x = 1,935,271.93
  5. Step 5: Solve for x
    x = 1,935,271.93/1,478.66
  6. Step 6: Final answer
    x = 1,308.81

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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.