Home / 1,547.55-2,321.70-1,178.49

Finding the Fourth Proportional to 1,547.55, 2,321.70 and 1,178.49

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Solution

The fourth proportional to 1,547.55, 2,321.70 and 1,178.49 is: 1,768.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.55 : 2,321.70 = 1,178.49 : x
  2. Step 2: Convert to fraction form
    1,547.55/2,321.70 = 1,178.49/x
  3. Step 3: Cross multiply
    1,547.55x = 2,321.70 × 1,178.49
  4. Step 4: Simplify right side
    1,547.55x = 2,736,100.23
  5. Step 5: Solve for x
    x = 2,736,100.23/1,547.55
  6. Step 6: Final answer
    x = 1,768.02

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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.