Home / 7,477.58-10,318.93-4,120.70

Finding the Fourth Proportional to 7,477.58, 10,318.93 and 4,120.70

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Solution

The fourth proportional to 7,477.58, 10,318.93 and 4,120.70 is: 5,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.58 : 10,318.93 = 4,120.70 : x
  2. Step 2: Convert to fraction form
    7,477.58/10,318.93 = 4,120.70/x
  3. Step 3: Cross multiply
    7,477.58x = 10,318.93 × 4,120.70
  4. Step 4: Simplify right side
    7,477.58x = 42,521,152.95
  5. Step 5: Solve for x
    x = 42,521,152.95/7,477.58
  6. Step 6: Final answer
    x = 5,686.48

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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.