Home / 1,547.46-2,135.50-918.02

Finding the Fourth Proportional to 1,547.46, 2,135.50 and 918.02

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Solution

The fourth proportional to 1,547.46, 2,135.50 and 918.02 is: 1,266.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.46 : 2,135.50 = 918.02 : x
  2. Step 2: Convert to fraction form
    1,547.46/2,135.50 = 918.02/x
  3. Step 3: Cross multiply
    1,547.46x = 2,135.50 × 918.02
  4. Step 4: Simplify right side
    1,547.46x = 1,960,431.71
  5. Step 5: Solve for x
    x = 1,960,431.71/1,547.46
  6. Step 6: Final answer
    x = 1,266.87

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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.