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Finding the Fourth Proportional to 7,322.40, 10,918.80 and 7,030.80

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Solution

The fourth proportional to 7,322.40, 10,918.80 and 7,030.80 is: 10,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.40 : 10,918.80 = 7,030.80 : x
  2. Step 2: Convert to fraction form
    7,322.40/10,918.80 = 7,030.80/x
  3. Step 3: Cross multiply
    7,322.40x = 10,918.80 × 7,030.80
  4. Step 4: Simplify right side
    7,322.40x = 76,767,899.04
  5. Step 5: Solve for x
    x = 76,767,899.04/7,322.40
  6. Step 6: Final answer
    x = 10,483.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.