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Finding the Fourth Proportional to 9,913.63, 13,681.16 and 5,437.39

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Solution

The fourth proportional to 9,913.63, 13,681.16 and 5,437.39 is: 7,503.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,913.63 : 13,681.16 = 5,437.39 : x
  2. Step 2: Convert to fraction form
    9,913.63/13,681.16 = 5,437.39/x
  3. Step 3: Cross multiply
    9,913.63x = 13,681.16 × 5,437.39
  4. Step 4: Simplify right side
    9,913.63x = 74,389,802.57
  5. Step 5: Solve for x
    x = 74,389,802.57/9,913.63
  6. Step 6: Final answer
    x = 7,503.79

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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.