Home / 7,069.64-9,756.32-4,085.20

Finding the Fourth Proportional to 7,069.64, 9,756.32 and 4,085.20

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Solution

The fourth proportional to 7,069.64, 9,756.32 and 4,085.20 is: 5,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,069.64 : 9,756.32 = 4,085.20 : x
  2. Step 2: Convert to fraction form
    7,069.64/9,756.32 = 4,085.20/x
  3. Step 3: Cross multiply
    7,069.64x = 9,756.32 × 4,085.20
  4. Step 4: Simplify right side
    7,069.64x = 39,856,518.46
  5. Step 5: Solve for x
    x = 39,856,518.46/7,069.64
  6. Step 6: Final answer
    x = 5,637.70

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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.