Home / 1,547.25-2,135.21-848.63

Finding the Fourth Proportional to 1,547.25, 2,135.21 and 848.63

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Solution

The fourth proportional to 1,547.25, 2,135.21 and 848.63 is: 1,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.25 : 2,135.21 = 848.63 : x
  2. Step 2: Convert to fraction form
    1,547.25/2,135.21 = 848.63/x
  3. Step 3: Cross multiply
    1,547.25x = 2,135.21 × 848.63
  4. Step 4: Simplify right side
    1,547.25x = 1,811,988.34
  5. Step 5: Solve for x
    x = 1,811,988.34/1,547.25
  6. Step 6: Final answer
    x = 1,171.10

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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.