Home / 9,312.56-12,852.12-5,121.68

Finding the Fourth Proportional to 9,312.56, 12,852.12 and 5,121.68

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Solution

The fourth proportional to 9,312.56, 12,852.12 and 5,121.68 is: 7,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,312.56 : 12,852.12 = 5,121.68 : x
  2. Step 2: Convert to fraction form
    9,312.56/12,852.12 = 5,121.68/x
  3. Step 3: Cross multiply
    9,312.56x = 12,852.12 × 5,121.68
  4. Step 4: Simplify right side
    9,312.56x = 65,824,445.96
  5. Step 5: Solve for x
    x = 65,824,445.96/9,312.56
  6. Step 6: Final answer
    x = 7,068.35

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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.