Home / 9,158.76-12,637.65-5,385.16

Finding the Fourth Proportional to 9,158.76, 12,637.65 and 5,385.16

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Solution

The fourth proportional to 9,158.76, 12,637.65 and 5,385.16 is: 7,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.76 : 12,637.65 = 5,385.16 : x
  2. Step 2: Convert to fraction form
    9,158.76/12,637.65 = 5,385.16/x
  3. Step 3: Cross multiply
    9,158.76x = 12,637.65 × 5,385.16
  4. Step 4: Simplify right side
    9,158.76x = 68,055,722.28
  5. Step 5: Solve for x
    x = 68,055,722.28/9,158.76
  6. Step 6: Final answer
    x = 7,430.67

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Half scale
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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.