Home / 1,478.07-2,037.39-1,122.84

Finding the Fourth Proportional to 1,478.07, 2,037.39 and 1,122.84

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Solution

The fourth proportional to 1,478.07, 2,037.39 and 1,122.84 is: 1,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.07 : 2,037.39 = 1,122.84 : x
  2. Step 2: Convert to fraction form
    1,478.07/2,037.39 = 1,122.84/x
  3. Step 3: Cross multiply
    1,478.07x = 2,037.39 × 1,122.84
  4. Step 4: Simplify right side
    1,478.07x = 2,287,662.99
  5. Step 5: Solve for x
    x = 2,287,662.99/1,478.07
  6. Step 6: Final answer
    x = 1,547.74

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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.