Home / 7,478.37-10,315.80-4,679.01

Finding the Fourth Proportional to 7,478.37, 10,315.80 and 4,679.01

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Solution

The fourth proportional to 7,478.37, 10,315.80 and 4,679.01 is: 6,454.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.37 : 10,315.80 = 4,679.01 : x
  2. Step 2: Convert to fraction form
    7,478.37/10,315.80 = 4,679.01/x
  3. Step 3: Cross multiply
    7,478.37x = 10,315.80 × 4,679.01
  4. Step 4: Simplify right side
    7,478.37x = 48,267,731.36
  5. Step 5: Solve for x
    x = 48,267,731.36/7,478.37
  6. Step 6: Final answer
    x = 6,454.31

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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.