Home / 9,360-12,918.54-5,381.16

Finding the Fourth Proportional to 9,360, 12,918.54 and 5,381.16

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Solution

The fourth proportional to 9,360, 12,918.54 and 5,381.16 is: 7,427.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360 : 12,918.54 = 5,381.16 : x
  2. Step 2: Convert to fraction form
    9,360/12,918.54 = 5,381.16/x
  3. Step 3: Cross multiply
    9,360x = 12,918.54 × 5,381.16
  4. Step 4: Simplify right side
    9,360x = 69,516,730.71
  5. Step 5: Solve for x
    x = 69,516,730.71/9,360
  6. Step 6: Final answer
    x = 7,427.00

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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.