Home / 7,557.89-10,424.21-5,320.40

Finding the Fourth Proportional to 7,557.89, 10,424.21 and 5,320.40

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Solution

The fourth proportional to 7,557.89, 10,424.21 and 5,320.40 is: 7,338.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,557.89 : 10,424.21 = 5,320.40 : x
  2. Step 2: Convert to fraction form
    7,557.89/10,424.21 = 5,320.40/x
  3. Step 3: Cross multiply
    7,557.89x = 10,424.21 × 5,320.40
  4. Step 4: Simplify right side
    7,557.89x = 55,461,006.25
  5. Step 5: Solve for x
    x = 55,461,006.25/7,557.89
  6. Step 6: Final answer
    x = 7,338.16

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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.