Home / 1,178.76-1,631.36-1,013.52

Finding the Fourth Proportional to 1,178.76, 1,631.36 and 1,013.52

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Solution

The fourth proportional to 1,178.76, 1,631.36 and 1,013.52 is: 1,402.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.76 : 1,631.36 = 1,013.52 : x
  2. Step 2: Convert to fraction form
    1,178.76/1,631.36 = 1,013.52/x
  3. Step 3: Cross multiply
    1,178.76x = 1,631.36 × 1,013.52
  4. Step 4: Simplify right side
    1,178.76x = 1,653,415.99
  5. Step 5: Solve for x
    x = 1,653,415.99/1,178.76
  6. Step 6: Final answer
    x = 1,402.67

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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.